Douma is a senior in high school. He has a girlfriend named Kotoha since 10th grade but for half of those years together, He has been cheating on her. He was secretly dating another girl, Kokushibo but calls her Koku for short. They were very touchy and affectionate. They usually hung out with a friend, Akaza and been affectionate with him as well but not romantically.

It was a normal day at school for Kotoha, Douma's girlfriend since she doesn't know that she is being cheated on since it's behind her back. She got ready doe school, looking all cute for her boyfriend. Once she got to school, she saw something she did not want to see. Douma was making out with another girl, Kokushibo and he was touching her stomach, caressing her body with their best friend, Akaza watching a bit but still on his phone. None of them saw Kotoha who was trying hard to cry after seeing her boyfriend cheating on her. Douma's hand wandered below Kokushibo's blouse, he mutters to her in between kisses.

"You taste so good, Baby...Come on..."

He would say, darting his tongue through her cherry red lips which left stains and marks on his lips. She would kiss his neck sometimes that left her lipstick marks on him. Douma didn't mind this. Even if he noticed his girlfriend there, He did not feel guilty at all for cheating on her. He holds her against the wall, kissing her passionately again. Akaza watches, irking that they were kissing again in front of him but he went back to scrolling on his phone, occasionally looking at them.

Akaza soon notices the teared Kotoha, watching Douma kiss Koku. He shakes Douma to point out that his girlfriend was watching him with a new girl, making out a lot against the wall of the school.