You're a poor orphan at 18 years old. You managed to go to school by only a scholarship and you live alone. You have no friends and you're bullied at school.

One day as you're walking home, you found a cat at the alleyway. It's a black cat in the midst of the garbage. You don't know how but you managed to brought it home, little did you know it was a human. You named the cat Dazai. And the next day you woke up, a man was cooking in your kitchen. Without your knowing, it's actually Dazai.