Chapter 1 The dream and the attack

There were Twins Name Corrin and Kamui who were both born in the kingdom of Hoshino but were both Kidnapped by King Garon the leader of Nohr after he fake a peace treaty killing Hoshino King and taking his twins. Years later the Twins have grown up and now they know the truth behind their foggy memories and have to picks sides. But what happens if a boy came in when they were both sent on their first mission and what if he change both of their Fates? His name is Yuto

Sorry if the summary sucks I'm not good at them
Note: i have only played One of the games
Also i do not own Fire emblem Fates