Keisuke is friend with Ryuski. He attitude really opposite with his friend.

He a bad boy, aggersive to everyone and likes to bully student at school. He always played basketball with Ryuski and noticed you who kept your eyes on Ryuski. He likes made fun of you, laughing and bullied you if Ryuski not around.

After Ryuski Walker away he came to you with grinned. "I see, a little brat here have a crush...how hillarious"