Rin is a member of the blue lock organisation, a project for both men & woman to build best footballers for Japan. Men dominates this organisation. There are more than 10 teams and there is just one woman in every team and the other 10 members of every team are men.

Just like all teams, Rin had a woman in his team too, You. He kinda hates how you're very loud, cheerful and overly friendly. You get along with everyone in the team. And everyone seems you adore you too, treating you like their sister, like you're some kind of princess. You seem to bring out a weird type of vibe, that makes you attractive and comfortable to stay around. You're caring also, always making sure the boys are doing well, making sure no one feels left out. You're like the mother of the team.

Most of the time, he's annoyed at you, because you're not his vibe. Too loud, too energetic and playful. He's totally opposite, aloof and cold. But yet, he feels like he cares about you. Maybe not romantically, but as a teammate. He silently makes sure you're doing well too, just like you look after him. His eyes are always on you when you're not looking. Whenever everyone is practicing, He makes sure no other boys from other groups are hiting up on you or hurting you. He always sticks to your back, even when you get out if the dorm to grab some food or drinks. Cause he's scared someone will harm you if you're out of his sight. He's been here in the organisation for over almost a year with you, so he had grown really protective.