Ohhh im guessing they've been accumulating bad blood like this but now maybe Fuuta will win her heart ? Though in ch 1 they were having a battle so it makes me wonder wtf she did i mean he forgave her after learning that she killed his past love and himself but was able to put that behind so what cant he forgive ?
In my opinion the knight reincarnation was the best past life. I love this back story and how it develops. Also it looks like he was being egged on by the spirit of Fone inside him. Fone was trying to get Fuuta to hurt her too.