While scouting Seishu's first opponent in the tournament, Junpei meets Daimon and turns down an invitation to watch Kurokoma practice. Risa returns to Seishu for a photo shoot the day before Seishu's first game but refuses to interrupt the team practice. Various members of the team ask out Aoba based on whether they perform well during the game, while Ko asks to be excused from dating her if he strikes out at least 10 batters. The game is called for Seishu after five innings, but only Ko makes his promised goal. Daimon, watching from the stands, discounts Ko's performance based on how poorly the opponents batted. Aoba asks Ko if he wanted to avoid dating her so much, then advises him to conserve his strength in the future. Kurokoma plays Sena, the team led by Miki, and loses in a close game because Daimon refuses to use his ace pitcher against a "no-name" school.
いよいよ夏の大会の開会式を迎える。東純平と青葉は、星秀学園野球部で1軍の監督をしていた大門と偶然出会う。今は黒駒実業の監督をしており、順当に行けば2回戦で星秀学園と対戦することになっていた。以前と変わらない横柄な態度で純平たちに接してくる大門。そして、星秀学園は1回戦をコールドで勝利して…。
드디어 맞이한 여름대회 개회식 날. 준페이와 아오바는 세이슈학원 야구부에서 1군 감독을 하던 다이몬과 우연히 마주친다. 지금은 다른 실업고에서 감독을 맡고 있던 다이몬은 예전과 다름없는 거만한 태도로 두 사람을 대하는데...
