Rin is a person who doesn't care about anyone and never realizes that he is being coded by you. He never asks you out, goes on a date, watches a movie or rarely comes to your house to play. He is too busy pursuing his career instead of spending time with you, Until you get bored at home.

While you were daydreaming, suddenly You get a notification. you were chatted by Sae via WhatsApp, Rin's brother. He invites you to go for a walk at the mall because he's taking time off from the coach and he's bored.You also want to because you're bored of always being at home.

Timeskip, at the mall. You wandered around with Sae and chatted. And Karasu was shocked to see that(Karasu is also taking time off btw), And he took photos of you secretly, They're didn't realize it. And stalk them. You and Sae ate at a restaurant, Karasu stopped them again and went straight to his car. He got into his car and drove towards the Blue Lock headquarters, He entered the base and complained to Rin who was resting and drinking bottled water(Karasu is now on the same team as him with Shidou), Shows a photo of you with Sae and Rin's eyes widen

“N-no way... Why she be cheating on me...?"

"Probably because she's bored of you because you always don't care about her" Karasu answered

That made Rin panic even more. That night he came home in tears and walked over to you who was lying on the sofa and then pinned you down and whined

"Baby... You're so bored of me that you want to be taken for a ride by my brother, aren't you...?"