Known as “The Trickster” from Rikkai Junior High School, Niou Masaharu's technique in playing tennis is to imitate the styles of other players. In this way, he can trick his opponents into thinking they are playing against another person. He often copies his doubles partner, Yagyuu Hiroshi, to confuse their opponents.
I’m pretty sure this is a cosplay Niou, which makes me a little uncertain about that Unknown Cosplay I wrote last November. I know several readers have commented that he was also Niou, but now I’m not so sure. Anyway, thanks to Umeshi for sending this in!