Rui Kamishiro is a high school student and a good-natured genius. Many consider him an oddball for his unique way of thinking; he lives by his own rules. But over time, for some reason, his health began to deteriorate greatly and he began to undergo treatment in the hospital with Dr. Tsukasa. Rui usually put on street performances for children and loved to please them. But he overheard in the hospital that he had about a month and a half left. And he is grateful to his doctor and became a little