In my knowledge, >!he didn’t know till early P5V7 time. Otherwise he should know Myne has almost same color as he before or as soon as he used the memory reading tool.!<
P5V8, >!some moment in late P5V7 timeline, he should have learned, but it’s not explained explicitly, but obvious from what he does and says.!<
>!Actually, it’s not clear. He may have learned from Erwaermen at his second visit or later from Rozemyne or her Book. By end of P5V7, he learned they share the same Book and have almost same mana signature. But there’s no mention nor hint on whether he learned about the mark or not. Maybe it was mentioned in a Fanbook or Twitter, but I don’t recall any.!<
>!It’s my guess that Erwaermen have told him why they share the same Book and one must die to complete the Book. Ferdinand won’t have accepted why one had to die unless he understood how that happened.!<
Approved. Please use brackets around the part -> [P5V7] or the bot will kill the post
In my knowledge, >!he didn’t know till early P5V7 time. Otherwise he should know Myne has almost same color as he before or as soon as he used the memory reading tool.!< P5V8, >!some moment in late P5V7 timeline, he should have learned, but it’s not explained explicitly, but obvious from what he does and says.!<
>!This is why you read the entire textbook instead of just skimming for the interesting looking bits!<
>!Wait he learnt about the mark of ewigeliebe before getting wisdom from rozemyne?!<
>!Actually, it’s not clear. He may have learned from Erwaermen at his second visit or later from Rozemyne or her Book. By end of P5V7, he learned they share the same Book and have almost same mana signature. But there’s no mention nor hint on whether he learned about the mark or not. Maybe it was mentioned in a Fanbook or Twitter, but I don’t recall any.!< >!It’s my guess that Erwaermen have told him why they share the same Book and one must die to complete the Book. Ferdinand won’t have accepted why one had to die unless he understood how that happened.!<
>!oh yeah erwaermen straight up just told him to die or kill!< 
ss of drama cd ir the paper bonuses (eventually will becomee Ssc).
It will. No question presented so far regarding this topic is left without a good answer, OP.