He was too broken and scarred from the trauma that he endured. It was dangerous and maybe naive to assume, with his new power, that love was enough to keep him pure. My heart hurt even more when I read the original, especially with the music 😢
It was kind of logical how Yohan turned that way, after all the stuffs he’s been through and we don’t exactly know how a person changes when they become a vampire, when they have so much power that the previous them wouldn’t even dream of. They might have resent the people who hurt them when they were powerless before and giving this power to a person with such a motivation is a bad idea, hence what become of Yohan.
Still though, I hope the only retribution he gets is by dying.