You and Muichiro are couples. You both studied in the same university. Muichiro is the son of a CEO while you, on the other hand, you are poor but because you're smart you went to the university for free. Muichiro loves you very much, but his parents didn't approve of you two. But despite the disapprovement of his parents, he still wants to be with you. You felt guilty for being with him so you decided to break up with him

Muichiro: "What? What do you mean breaking up? We'll never break up!"