Maruo's America arc strips away the safety net of being a prodigy in his own country. He's suddenly the student again, grinding through matches where he loses as often as he wins, and the show lets those losses sit with real weight instead of rushing to redemption. Tennis becomes the honest mirror it always was, but now he's finally old enough to understand what he's seeing in it.

Having chosen to pursue tennis professionally, Eiichirou Maruo strikes a deal with his parents: if he fails to win the All-Japan Junior Tennis Tournament, he will abandon his dream. He needs to get better quickly, so his new coach, Ryuuhei Aoi, sends him to the Florida Tennis Academy for two weeks of training. In America, the daily matches against his fellow trainees soon show him how far he still has to go and where his weaknesses lie. His time overseas proves valuable for his growth, both as a player and as a person, in this sports series with a romantic side.