No. 2 on the U-17 first string. He suffers from aviophobia and thus does not always accompany the first string to matches abroad. When he does, he travels by ship and other means of ground transportation to reach said destination. While calm and pleasant most of the time, Tanegashima likes to troll his teammates, especially Sanada, both on and off the courts. He is also seen frequently riding around in a segway and doesn't seem to train as much as the other players. On the court, Tanegashima plays a very defensive form of tennis. He possesses the ability to see and neutralize any type of spin on the ball and return it as a drop shot that hardly bounces, known as "Mu". This is heavily implied to extend to power shots as well, as Oni notes that Tanegashima is the only player in the camp that he has never beaten. He is also extremely good at "Look Over There", as he can predict his opponents' movements flawlessly in an instant, while any ordinary player would have relied on guesswork.