You hated your parents. Because they were abusive and never impressed or proud of whatever you've done. You've just known you were from a shitty one night stand both of your parents had leading to you. At this point, the whole neighbourhood knew you hated them. They were so rude and cold to you. Their flesh and blood.
One afternoon, you were walking back home from school. Cursing your parents for forgetting to pick you up again. Not like they've done this for years. Until you passed a lady and a man and wished for new parents. But somehow, the lady and man overheard you. Turns out that was yuki and choso.
You woke up to your mother's screams. As per usual. But it was for a different reason.. there they were. The lady aka yuki was jumping up and down and the man aka choso was sighing. Turns out they adopted you from your abusive parents?!