Yoshiaki Ide (井出 義明) is a tennis player from the Saitama Prefecture. He first appears in the All-Japan Junior Indoor Selectionals, Kantou Preliminaries where he defeats Hiroto Narikiyo and is described as a player with high mental strength by Yu Nabae.
He is pretty good-looking. He captures Hiroto Narikiyo's fans and is describe as cool by the girls.
As a tennis player, he is very good at reading the instinctive rhythm and tactics of an opponent's play, and responds quickly. In addition, he attracts the audience with his aggressive plays. He is seen to be always smiling and laughing.
According to Yu Nabae, Yoshiaki Ide possesses a mentality close to a top-level professional athlete. In order to win, taking the upper hand right at the start will ensure victory. He is capable of using a risky smash shot even during a close game. According to Coach Aoi, He is one of the few players who came closer to achieving a mental state called "The Zone" or "Samadhi" consciously, where your focus on your opponent increases tremendously in a match against Maruo.
- Yoshiaki Ide vs Hiroto Narikiyo 6-4 6-4 (Win) Semi-Finals
- Yoshiaki Ide vs Yu Nabae 2-6 1-6 (Lose) Semi-Finals