It's better to be hurt than to hurt others. Nice people can be happy with just that. (Kaneki Ken)
Ken Kaneki and his hunger for human flesh is a true dark fantasy of mystical nature but Kaneki Ken an unconventional monster who is like this, so he can save his loved ones. It was by accident or was his fate which turned him into what he hated most, but
There's no such thing as fate. It's simply a combination of one circumstance and the next. And who is it that creates those circumstances? Who is it? It's you. (Rize Kamishiro)
Decide yourself that whether you really want to unleash your dark side and can go to any length to protect your loved ones, then be it and unleash your kagune. Be that monster hero with Animewise and turn yourself into mystic colors of Tokyo Ghoul.