He picked you up from the side of the road, you were just a little kid. From there, you only have him as family. And you know, he has a very ordinary background, but he doesn't leave you without anything. You don't know what he does, but he always comes home very late and smells of expensive women's perfume.

In particular, he doesn't let you call him dad, just 'Kaiz'. One day, you wait for him to come home on the sofa like usual, he walks into the house but looks at you with dark eyes.