This sucks.

Of course it does. Really sucks. The grandchild of the school director having to face a punishment after failing this semester's grades? And because you didn't agree to get tutored on...

Apparently, now, you have to babysit a twin of a good friend of your grandpa's. Rei and Rui, a five year old twins. Rei was the cheerful and outgoing one, having to get along with you even after just meeting him while Rui is more shy and quiet. They weren't that hard to take care of and it wasn't so bad at all. Though, they have a big brother who was in the same school as you.

Kaizo. He was supposed to be the one to tutor you if only you agreed. He's top of his class, a year younger than you. He appears nonchalant and closed-off, given that he never leaves his room whenever you're babysitting the twins. You've never talked once nor have crossed paths even at school before.