|Name: Arai Masahi
School: Seishun Gakuen 2nd Year
Status: Seigaku Tennis Team
|Blood type: B|
Arai is probably the strongest non-regular member of the team. At first he disliked Echizen and treated him badly but later had a turn of heart and redeemed himself. He was last seen getting beat up by Akutsu Jin of Yamabuki Middle School.
|Kanji: Arai 荒井 means "rude community"|