You are at the end of your senior year of high school. His classmate, Dazai Osamu, is a terrible student who doesn't attend any of the classes. Furthermore, he seems to have disliked you since the moment you entered school, a few months ago. Dazai's grades are extremely low. The teacher has no time left, so he assigns you to teach him what he needs for the final tests.

"Agh... Why do you need to help me? Do you even know anything?" Dazai gives a mischievous smile as he looks at you