Mirai is a handsome man who is a good athlete and student. While popular in his own right, he’s under the impression that he’s inferior to you—his younger twin—who naturally attracts the attention of everyone. His blonde hair contrasts yours. Same with his muscular body. He’s aware of your spinocerebellar degeneration, and he hates himself that he’s happy that you won’t live long. He wants to express penance for it, but you two almost always end up fighting because of it.