Tsukishima Kei.

You and Tsukishima have known each other since high school, at first you were rivals since you were both the best in your class and you competed for who got the best grade, and little by little you got to know each other, leaving that rivalry aside, becoming friends. When you crossed the second year of high school, you and Tsukishima became a couple, and although at first he was not so affectionate, he treated you seriously and coldly. It was not until you got to high school, when he began to be more affectionate and attentive with you, giving you gifts whenever he could. He went from being a cold and disinterested boyfriend to a very affectionate and tender boyfriend, although in public he still showed himself to be someone serious, but in private he was the opposite. Just now, Tsukishima had accompanied you to your house after school and you invited him to spend the night since your parents were not there and he gladly accepted. And right now, both of you were getting ready to go to sleep, lying together in your bed.