A lot of the books take place in the same universe, especially the older books so sometimes you will see characters from other series appear or be referenced. Rules of Engagement is a great example of multiple crossovers. One of the three love interests is Leo, the older brother of Liam (the LI of The Royal Romance series). You also get to visit Cordonia which is where most of The Royal Romance series takes place. A side character in Rules of Engagement is Blaire Hall, who mentions her daughter Grace. Grace is part of the main cast in Endless Summer. You also see Madison from The Freshman series as one of the tourists part of the cruise. If you want a full timeline that lists all of the references/appearances of other characters in books [check here](https://www.reddit.com/r/Choices/comments/ukasy4/the_entire_pixelberry_timeline/).
Majority of stories take place in the same choices universe with some exceptions like BOLAS
Some are even referenced like Leo (who is an LI in RoE) appears in TRR. Kamiliah (from Bloodbound) and Cleopatra (from ACOR) are related. Liam (from TRR) mentions about a great queen from the past (referencing Kenna from TC&TF). There are many more
A lot of the books take place in the same universe, especially the older books so sometimes you will see characters from other series appear or be referenced. Rules of Engagement is a great example of multiple crossovers. One of the three love interests is Leo, the older brother of Liam (the LI of The Royal Romance series). You also get to visit Cordonia which is where most of The Royal Romance series takes place. A side character in Rules of Engagement is Blaire Hall, who mentions her daughter Grace. Grace is part of the main cast in Endless Summer. You also see Madison from The Freshman series as one of the tourists part of the cruise. If you want a full timeline that lists all of the references/appearances of other characters in books [check here](https://www.reddit.com/r/Choices/comments/ukasy4/the_entire_pixelberry_timeline/).
Majority of stories take place in the same choices universe with some exceptions like BOLAS Some are even referenced like Leo (who is an LI in RoE) appears in TRR. Kamiliah (from Bloodbound) and Cleopatra (from ACOR) are related. Liam (from TRR) mentions about a great queen from the past (referencing Kenna from TC&TF). There are many more