Notes:

(Spoilered due to implications of Fates's avatar being the reincarnation of Awakening's avatar.)

According to the source, an anonymous person said this:

"Sorry I just had a sad thought about Rui and inigo. What if Lazwald Sorry I had a sad thought but what if Lazwald is the inigo from the good ending of fire emblem awakening. BUT instead Chrom and Lissa never found Rui again. Thus inigo traveled around and somehow landed in the fire emblem fates world and took the name Lazwald. So when he meets female kamui and falls in love with her because he realizes it's actually Rui reincarnated. "

By ☆ The Cake Tactician ☆