Blood Type: AB
Tanegashima is a junior of Class 11 and the vice-captain of the Swimming Club.
Like his fellow members of the Swimming Club, Yakushima and Mogana Kikaijima, Tanegashima is obsessed with money, and is willing to go so far as to risk his own life to get a hold of it. Kikaijima claims this attitude originated after the orphanage he grew up in foreclosed due to lack of funds. Like his fellow teammates, his dream is to fill an entire pool with money, and spend a whole day swimming in it. Though he considers money more important than his friends, he likes his friends more than money. Both he and Yakushima think of Kikaijima like a daughter, and are prepared to make anyone who tries to lay a finger on her regret it.
Voiced by: Hiroyuki Yoshino