Hoshino (full name unknown) is a regular from Kasumi Daiyon tennis club.
Kasumi Daiyon participated in the Kanto Regionals. They were eliminated by Nashikari Gakuen in the first round.
Kanto Regionals Round 1
|Hiyori/Hoshino||Doubles 1||Wakabayashi Tatsumi/Tomoda Shigeru||Lost 2-6|