Year: 3rd
Birthdate: October 15
Height: 178 cm
Weight: 64 kg
Blood Type: A
Handedness: right-handed
Shoes: Mizuno (WavejistJP)
Racquet: Bridgestone (KingBeam s65)
Play style: All-rounder
Signature Techniques: Closing off his heart, Higuma Otoshi, Drop Shot
Favorite food: seaweed soup, sushi
Favorite color: olive green
Favorite subject: chemistry, math, technology
Hobbies: Watching movies (Romance)
Family members: mother, older sister, father
Taste in girls: A girl with pretty legs
Committee: foreign exchange committee
Worst school subject: 器械体操 (Rhythmic gymnastics)
Most frequented spot in school: サロン (literally "salon", says he goes there mostly to read)
Graduated from: Doutonbori Daini Shougakou (same as Kenya)
Spends his allowance on: goes to the movies
Motto: 人間万事塞翁が馬 (Inscrutable are the ways of heaven/Fortune is changeable and unpredictable)
Movie: 邦画（純愛系）(Japanese movies about "pure love")
Book: romance novels
Music: 昭和歌謡曲 (popular Showa songs/folk music?)
Favorite date spot: a quiet/peaceful park
Most desired/needed item: "himitsu" (it's a secret)
Daily routine: reads while riding the train
Dislikes: natto and caterpillars
Special non-tennis skill: 魚を3枚におろす事 (to fillet a fish into three pieces), playing the violin/cello

The Tensai (Genius) of Hyotei Gakuenand also know as "Man of 1000 Techniques." He can perform Higuma Otoshi (one of Shusuke Fuji's Triple Counters: Bear Drop) perfectly. He is called "Oshitari of the one thousand skills." He plays doubles with Gakuto Mukahi in the Kantou Tournament against the Eiji Kikumaru-Takeshi Momoshiro pair and singles in National Tournament against Takeshi Momoshiro, winning 6-4. Oshitari is originally from Kansai. Oshitari also plays the violin, as shown in the nationals OVAs. Oshitari has a cousin named Kenya who is a regular for Shitenhouji (Osaka), which plays Fudomine Middle School and Seigaku in the Nationals.