Hoshiai no Sora

Synopsis

Nao's mother launches a complaint to the school's principal, resulting in club activities being suspended for a week. Unable to practice, the club decides to scout out Joy Kusakabe, the ace of Hatanouka Middle School, their first opponent in the summer tournament. However, the school forbids observers, so Yuta suggests they infiltrate the crowds of girls that gather outside the courts to spy on Joy. He and Maki dress as girls, and he confides to Maki that he identifies as nonbinary. Maki tells him he shouldn't feel pressured to label himself as male or female, and tells him about Shou, a FTM friend of his mom. Yuta tells Maki that their older sisters refer to them as Yu, and Maki decides to call them Yu as well. On the way to Hatanouka, the club runs into Takuto Murakami, who quit the soft tennis club to play basketball and attempts to hit on Maki and Yu. The club arrives at Hatanouka and Kanako distracts the girls watching him to allow Maki and Yu to videotape the team. The club reviews the footage and realizes that their attitude towards the sport must change if they want to stand a chance in the tournament. Kanako meets with the club advisor, who also happens to be the art teacher, and shows him her drawings, telling him that her parents don't see art as a worthwhile profession. Later, club activities resume and a practice match is arranged between the girls and boys team.

(Source: Wikipedia)