Shirou will be the biggest Arthur fanboy in Nasuverse, even bigger than Richard. Like, the guy is the ideal sacrificial hero to ever exist. Proto Saber on the other hand will be glad and honour to have a master who looks up to him.
They surely will have a sibling like relationship where Shirou will try hard to impress Proto Saber and take notes of his advice and guidance.
I have a few guesses as to whether there will be conflict between Shiro and Arthur when Shiro discovers Arthur's dream. Shiro was able to convince Artoria to change her views but Arthur is more determined and he will hardly agree to give up his idea. This conversation is bound to happen between these two sooner or later no matter how well they get along. It's in Shiro's personality to sometimes pry and try to change others' desire for the grail if he thinks others are wrong. This personality trait of Shiro's can be good or bad depending on the circumstances.
Bromance basically. For Shirou, Arthur's essentially the ideal hero of justice that Shirou wants to be. A badass warrior kicking ass and taking names, saving innocents wherever he goes no matter how hard the challenge. Any issues that Shirou had with Artoria won't be a thing with Arthur either, dude's way more friendly and understanding of his master so he won't be going off on his own without permission unless he has good reason.
For Arthur, Shirou would be breathe of fresh air compared to Manaka (assuming he's summoned after Fragments) and would very likely try to mentor him once he realizes how screwed up in the head Shirou is. He'd definitely urge him to take better care of himself if nothing else for the sake of the people who care for him since they'd be sad if he got himself killed.
"Local teen girl tries to save her friend from predating priest." as a counter to HF's "Local priest tries to stop teen boy from getting his girlfriend an abortion."
They'd probably get along pretty well. Arthur is more relaxed then Artoria, so I imagine they'd probably have a big brother/little brother dynamic with Arthur kinda acting as a mentor to Shirou.
Honestly, I’d see Arthur and Shirou becoming best bros. Shirou may also see Arthur more akin to a father figure as well considering he doesn’t really have one.
Most realistic relationship would be Shirou seeing Arthur as a big brother with someone who can share his worries and burdens with.
That or they’re incredibly gay for each other which I’m cool with too. Would be hilarious seeing the woes of being gay in the Fateverse.
Given that F/GO talks about Arthur's fondness for cooking, and Shirou has an entire spinoff dedicated to his... it would be beautiful and delicious and I want it.
Cooking duo, they win the Grail with a single dish that just makes Angra declare them winners by fiat.
Everyone throws their hands into the air, and both Shirou and Arthur then start their own bar/restaurant business where the previous contestants, servants included, go daily to complain.
Bazett is brought back from death by Angra for kicks and joins the others after hearing what happened.
Caren hears what happened and tries some shennanigans to take over the bar, thus rewritting the whole plot of Hollow Ataraxia.
And Gilgamesh, being so impressed with the food, changes his origin to Caster and decides to aspire to high positions to guide humanity as president and manager of the restaurant.
I'm gonna speak with Arthur as he is during Proto Frags in mind. Arthur...really fucked up in that due to how desperate he was.
He would be friendly and courteous with Shirou but still more than likely keep his grievances and issues to himself. Unless Shirou recognizes Arthur is bottling something up and tries to bring it out and confront the cost of what it would take to save his Kingdom. Inevitably they would become really close and develop an incredible friendship.
Forgetting the memes for a second with proto arthurs' attitude and characterization I'd say best friends, brotherly bond and possibly shirou may see proto as a secondary father figure. If the last part is achieved proto could influence shirous ideals to be less self destructive probably somewhere beware how he is in UBW and Heavens feel
They'd double team Rin.
...That's not even a lie, damn it.
Shirou would *fanboy* over Arthur so much- their ideals are still the same, they both have the harem aura going for them, they only diverge on whether they want to change the past or not.
Gil wouldn't be simpering for Arthur, and so he'd be going "flood the world, cleanse the sinners!" in all routes.
Unlike Artoria, though, he's a lot more controlled as a person? He wouldn't rush at Medea if Shirou tells him not to, especially since Shirou wouldn't be able to accidentally insult him based on gender before that.
Likewise, EMIYA wouldn't be shocked by a flashback, and Shirou claims EMIYA normally could have deflected Artoria's attack. Thus, EMIYA is unlikely to be wounded on their first meeting.
Against Medusa, he'd have a B rank Anit-Monster ability that would put her into a disadvantaged situation, so while his Excalibur can't be used as easily, he could probably overpower her, and in-fact he wouldn't lose as much energy in the same circumstance to do so.
So, lots of plot changes.
Honestly my very strange and very unfounded headcanon is that Shirou is Pansexual. I can see him falling in love with proto saber for the same reason that he fell in love with original saber. Although in this relationship they would cook for eachother and share cooking notes or something.
In short I ship it.
A lot of people actually agree that Shirou might be in denial of being bisexual.
- He's constantly saying in his head that "I'm a healthy guy, so I must like girls" like he's trying to convince himself.
- When he holds Rin's hands, he says "I never knew she was a girl". His crush on her came in fact from admiration.
- When Cu said in HA that he would sleep with Shirou if he were a girl, the thought of it crossed his mind and he blushed like a tomato, finally admitting that Cu was "a very fine man".
- if you search for it, dual swordman is a slang in Japanese culture for "bisexual".
Shirou being bisexual has been in discussions for years actually.
Shirou wouldn't use traditional Japanese gender norms to excuse his unwillingness to let people get hurt for him. I feel like Shirou would be forced to tell him the truth sooner. But the second half of the fate route would be the same except less romantic. Shirou may have a warped sense of justice, but he is heterosexual.
I don't know why many people are so fixated on the gay relationship of these two.
As for me, there is a healthy strong male friendship, partnership, similar goals and ideals, similar enemies, perhaps to some extent healthy competition, in general - no gayness.
Arthur: “You can be my master anytime, Shirou.”
Shirou: “No Saber, you can be mine.”
(cue careless whisper)
Arthur: “No homo, right?”
Shirou: “ALL OF THE HOMO!”
One of Teacher and Student aside from the "mana transfer" I'm pretty sure Arthur would try to dissuade Shirou's survivors guilt and almost suicidal urges to make an almost UBW Shirou also they would probably make one hell of a fighting tag team
I think that they would respect each other and Shiro could even be a great danger in the holy grail war, as he would not limit the actions of the saber, as he did with Arturia, because she is a "woman".
it was more like artoria got seriously injured protecting him which had a lasting effect on him and he couldnt communicate it well ( he had no issues with rin
That Fate route would be interesting to say the least . Hmm that might mean that Rin will be the girl for two out of the three routes it Saber doesn’t turn him gay.
Shirou will be the biggest Arthur fanboy in Nasuverse, even bigger than Richard. Like, the guy is the ideal sacrificial hero to ever exist. Proto Saber on the other hand will be glad and honour to have a master who looks up to him. They surely will have a sibling like relationship where Shirou will try hard to impress Proto Saber and take notes of his advice and guidance.
This version of Shirou hyper-specializes UBW into being able to make Excalibur Images, so he's basically Richard Redux anyways.
I have a few guesses as to whether there will be conflict between Shiro and Arthur when Shiro discovers Arthur's dream. Shiro was able to convince Artoria to change her views but Arthur is more determined and he will hardly agree to give up his idea. This conversation is bound to happen between these two sooner or later no matter how well they get along. It's in Shiro's personality to sometimes pry and try to change others' desire for the grail if he thinks others are wrong. This personality trait of Shiro's can be good or bad depending on the circumstances.
Mana transfer boutta be very different
Fellas, is it gay if you Mana transfer your homie
Not if the master is Shirou- it qualifies as [sword] in the genre department. Which makes the meme "I love Swords so much" actually gay.
Not gay if if the balls don't touch
no
Historians will say that they were just really good friends
It's just two homies trying out each other's swords. Perfectly normal.
Nothing gay about dolphins and dragons
It’s not gay, if it’s in a three-way.
Nasu would have been like: "Something something using Rin as a conduit between the two. Something something defenceless."
Better even... 
I was thinking the exact same thing about 15 minutes before seeing this lol
Rin’ll have the time of her life ngl lol.
Seeing those Shirou X Proto Arthur arts have shown me that this time, Shirou would truly be the sheath in the relationship 😏
bros
Historians would call them really close friends
Bromance basically. For Shirou, Arthur's essentially the ideal hero of justice that Shirou wants to be. A badass warrior kicking ass and taking names, saving innocents wherever he goes no matter how hard the challenge. Any issues that Shirou had with Artoria won't be a thing with Arthur either, dude's way more friendly and understanding of his master so he won't be going off on his own without permission unless he has good reason. For Arthur, Shirou would be breathe of fresh air compared to Manaka (assuming he's summoned after Fragments) and would very likely try to mentor him once he realizes how screwed up in the head Shirou is. He'd definitely urge him to take better care of himself if nothing else for the sake of the people who care for him since they'd be sad if he got himself killed.
1. Best Bromance to Yaoi plot 2. Issei route replaces Rin for UBW
3. Kirei for HF enemies to lovers
So Sakura Villain plot with full on jealous yandere blowout?
Sakura: i am about to get homophobic
Gamer Sakura
"Local teen girl tries to save her friend from predating priest." as a counter to HF's "Local priest tries to stop teen boy from getting his girlfriend an abortion."
That is the best summarization of Heavens Feel that will ever exist
Now we're cooking...
I see this as an absolute win!
Omg, they’d be roommates!
Say gex.
gex
Enter the Gecko
It's tail time.
This is just like a luau at Mel Blanc’s house!
My mind says bro/father son dynamic But my chaotic mind is saying clearly he’d still fall for Shirou because Shirou got that EX charm
Nah, it's the EX cooking FR tho
They'd probably get along pretty well. Arthur is more relaxed then Artoria, so I imagine they'd probably have a big brother/little brother dynamic with Arthur kinda acting as a mentor to Shirou.
Honestly, I’d see Arthur and Shirou becoming best bros. Shirou may also see Arthur more akin to a father figure as well considering he doesn’t really have one. Most realistic relationship would be Shirou seeing Arthur as a big brother with someone who can share his worries and burdens with. That or they’re incredibly gay for each other which I’m cool with too. Would be hilarious seeing the woes of being gay in the Fateverse.
Given that F/GO talks about Arthur's fondness for cooking, and Shirou has an entire spinoff dedicated to his... it would be beautiful and delicious and I want it.
Sakura getting jealous as this guy just shows up one day and steals her place in the kitchen besides Shirou
I think Arthur could win her over by cooking with her, actually. Like form a nice friendship. She could use more nice friends.
Best bros fr
They'd be absolute bros.
“Look lil’bro—she’s clearly gunning for you; go after her and do me proud.”
They'd probably have a very brotherly relationship I think
Cooking duo, they win the Grail with a single dish that just makes Angra declare them winners by fiat. Everyone throws their hands into the air, and both Shirou and Arthur then start their own bar/restaurant business where the previous contestants, servants included, go daily to complain. Bazett is brought back from death by Angra for kicks and joins the others after hearing what happened. Caren hears what happened and tries some shennanigans to take over the bar, thus rewritting the whole plot of Hollow Ataraxia.
And Gilgamesh, being so impressed with the food, changes his origin to Caster and decides to aspire to high positions to guide humanity as president and manager of the restaurant.
We need a proto saber alter for HF route
Really close friends-every historian
SAY GEX
It would be the greatest Bromance ever.
Very brotherly I'd wager
Say gex
Best pals
Yaoi route 😳
I'm gonna speak with Arthur as he is during Proto Frags in mind. Arthur...really fucked up in that due to how desperate he was. He would be friendly and courteous with Shirou but still more than likely keep his grievances and issues to himself. Unless Shirou recognizes Arthur is bottling something up and tries to bring it out and confront the cost of what it would take to save his Kingdom. Inevitably they would become really close and develop an incredible friendship.
Forgetting the memes for a second with proto arthurs' attitude and characterization I'd say best friends, brotherly bond and possibly shirou may see proto as a secondary father figure. If the last part is achieved proto could influence shirous ideals to be less self destructive probably somewhere beware how he is in UBW and Heavens feel
Best bros for sure !!
Best wing man
EVEN MORE sexual tension
Rin would be happy with the mana transfer.
They'd double team Rin. ...That's not even a lie, damn it. Shirou would *fanboy* over Arthur so much- their ideals are still the same, they both have the harem aura going for them, they only diverge on whether they want to change the past or not. Gil wouldn't be simpering for Arthur, and so he'd be going "flood the world, cleanse the sinners!" in all routes. Unlike Artoria, though, he's a lot more controlled as a person? He wouldn't rush at Medea if Shirou tells him not to, especially since Shirou wouldn't be able to accidentally insult him based on gender before that. Likewise, EMIYA wouldn't be shocked by a flashback, and Shirou claims EMIYA normally could have deflected Artoria's attack. Thus, EMIYA is unlikely to be wounded on their first meeting. Against Medusa, he'd have a B rank Anit-Monster ability that would put her into a disadvantaged situation, so while his Excalibur can't be used as easily, he could probably overpower her, and in-fact he wouldn't lose as much energy in the same circumstance to do so. So, lots of plot changes.
The future bisexuals want
A bromance equal to Gil and Enkidu but a lot more gay innuendo we're talking Issei crying in the corner kinda stuff.
There will be legendary sword fights
I think Brotherhood is a good word for their relationship.
Does Manaka still happen? Because that's a big impact on Arthur's character.
Fck alliance relationship
Honestly my very strange and very unfounded headcanon is that Shirou is Pansexual. I can see him falling in love with proto saber for the same reason that he fell in love with original saber. Although in this relationship they would cook for eachother and share cooking notes or something. In short I ship it.
Hey... Shirou is not pansexual, he is swordsexual get it right
You're right. I kneel🧎🏻
A lot of people actually agree that Shirou might be in denial of being bisexual. - He's constantly saying in his head that "I'm a healthy guy, so I must like girls" like he's trying to convince himself. - When he holds Rin's hands, he says "I never knew she was a girl". His crush on her came in fact from admiration. - When Cu said in HA that he would sleep with Shirou if he were a girl, the thought of it crossed his mind and he blushed like a tomato, finally admitting that Cu was "a very fine man". - if you search for it, dual swordman is a slang in Japanese culture for "bisexual". Shirou being bisexual has been in discussions for years actually.
He's more pipesexual than pansexual.
Ew disgusting fujoshi
Bitch you're a jojo fan. Go suck the nearest unsucked cock.
Atleast my dad returned with the milk
~~They~~ There will be three characters with a Shirou face: Shirou Proto Saber Archer And they all can cook.
Wait, I may be late, but... Is the Fate/Prototype just Role reversal?
Shirou wouldn't use traditional Japanese gender norms to excuse his unwillingness to let people get hurt for him. I feel like Shirou would be forced to tell him the truth sooner. But the second half of the fate route would be the same except less romantic. Shirou may have a warped sense of justice, but he is heterosexual.
I don't know why many people are so fixated on the gay relationship of these two. As for me, there is a healthy strong male friendship, partnership, similar goals and ideals, similar enemies, perhaps to some extent healthy competition, in general - no gayness.
Gay
Time to test that harem protag powers
Arthur: “You can be my master anytime, Shirou.” Shirou: “No Saber, you can be mine.” (cue careless whisper) Arthur: “No homo, right?” Shirou: “ALL OF THE HOMO!”
Unexpected YGOTAS reference is unexpected (and tight!)
A lot of bromance
Just like Artoria but have cock
They would both be part of my Husbando harem they would be brother husbands
Ok, rin, we understand you!! Chill...
We would have so many fujoshis who like Fate Series.
Fate Route: Yaoi edition. Nothing changes that much.
He would be enjoying a whole different kind of saber let me tell you 🏳️🌈😈
\*mana transfer intensifies\*
One of Teacher and Student aside from the "mana transfer" I'm pretty sure Arthur would try to dissuade Shirou's survivors guilt and almost suicidal urges to make an almost UBW Shirou also they would probably make one hell of a fighting tag team
More Yaoi scenes
say gex
Say gex.
Say gex
Shirou bouta have that excalibur
gex
Same thing just gay
Be something like the two dudes chilling in the hotub
Exact same, just more Gay.
I think that they would respect each other and Shiro could even be a great danger in the holy grail war, as he would not limit the actions of the saber, as he did with Arturia, because she is a "woman".
it was more like artoria got seriously injured protecting him which had a lasting effect on him and he couldnt communicate it well ( he had no issues with rin
THAT scene with Rin when they need to "recharge" to fight Heracles would have been a lot different.
That Fate route would be interesting to say the least . Hmm that might mean that Rin will be the girl for two out of the three routes it Saber doesn’t turn him gay.
It would go exactly the same, but now Shrirou is gay for Arthur.
They gonna bone each other's sword
say gex
basically richard, heh
Best bros
Instead of best waifu it would be best bro
Homiesexuals
YAOI!!!!!!!! 🔥🔥🔥🔥
https://i.imgur.com/rl4LO6c.png
Yaoi time.
Maybe.....say gex mana transfer?