Natsuhi Takenaka captains the Keishin Academy boys' basketball team, wearing jersey number 4. He initially views the school's girls' basketball team with contempt, believing they lack serious competitive drive and questioning their right to exist, leading to antagonistic early encounters. He shares a history as childhood friends with girls' team members Maho Misawa and Saki Nagatsuka. However, Natsuhi and Maho experienced a major falling out fueled by their opposing attitudes toward sports: Natsuhi embodies intense dedication, while Maho historically mastered new sports quickly only to abandon them just as fast. This fundamental clash continues to spark conflicts and heated arguments between them. Natsuhi exhibits a fiercely competitive nature, particularly targeting Tomoka Minato, the girls' team's ace player. He challenges her to a free throw contest and reacts strongly to her victory. His rivalry extends to accusing the girls' coach, Subaru Hasegawa, of being a "lolicon," echoing accusations that once suspended Subaru's own high school team. Natsuhi harbors a one-sided romantic interest in another girls' team member, Hinata Hakamada. Classmates know of his crush, though Hinata herself does not return his feelings. Over time, Natsuhi's perspective shifts subtly. Witnessing the girls' genuine passion and dedication firsthand softens his stance. He moves from open hostility to secretly supporting their efforts, indicating an evolution beyond his rigid initial views. While tensions with Maho persist, their dynamic eventually suggests reconciliation or a deeper understanding after their initial feud.