Tetsuya Hamaguchi

Appearance
Tetsuya is a thin teenager with short purple-ish hair and blue eyes. He also wears a pair of glasses.

Plot
He makes his first appearance in Volume 4, being a member of the Rabbit group alongside his classmates Honami Ichinose and Ryōta Beppu for the Cruise Ship Special Test.

In Year 2 Volume 3, he asks Kiyotaka Ayanokōji about his relationship with Honami and insists him on dating her.