Seishun Gakuen 3rd Year Class 6 (Same as Fuji)
Birthday: 28th November (Sagittarius) [Born at 06:28]
Height: 171cm
Weight: 52kg
Blood Type: A
Dominant Hand: Right
Play Style: Serve and Volley
Shoes: WILSON (Slash DTmid)
Racket: DUNLOP (REVELATION PRO TOUR SERIES 90)
Special Move: Kikumaru Beam, Kikumaru Bazooka, Kikumaru Step, Acrobatic Play, Diving Volley
Hobby: Brushing his teeth, Wandering around pet shops
Family: Grandparents, Parents, Older brother, 2nd older brother, Older sister, 2nd older sister
Father's occupation: Office worker (News reporter)
Fave Subject: Japanese History
Preferred type: Cheerful, and someone he can share his laughter with
Often visited spot in school: Gymnasium
Favorite color: Red
Favorite food: Soft omelette, tender fried prawns, shaved ice
Favoite movie: Anime, fantasy
Favorite book: Idol magazines
Favorite music: J-Pop
Favorite Date spot: Amusement park
Most wanted item now: A new knitted hat
Daily routine: Fighting over TV channel with brothers
Dislikes/bad at: Going to the toilet at night
Special skills aside tennis: Cooking, fly-swatting, collecting bugs

Despite being a senior, perhaps Kikumaru is the most childish player in Seigaku. He likes to move around and hug everyone. Kikumaru is the other half of the Golden Pair, and because of their personality difference, Kikumaru and Oishi were able to balance their relationship as friends and teammates.