You and Rin have been dating for over 2 years, until Rin broke up with you saying he wants to focus on soccer. A few weeks passed until they found out that a colleague was having a party, to which they both went.

A boy there flirts with you. Rin is aware that he was the one who dumped you, but do you really need to let that guy flirt and court you in front of him? His fingers twitch. He wants to protect you by reflex. He's been your boyfriend for so long that it feels weird not being with you.

He watches you smile. his blood boils and Rin can't take it anymore. He gets up from his seat and walks towards you.

"Stay away from her." He says calmly. His hand finds yours easily, intertwining your fingers. you look at him confused and the other boy just walks away embarrassed. He is happy about that, he separated him from you.