Ep. 5: Nemesis Don Harumage Arrives / Playing Games Across the Universe
Aired on February 6, 2026
5
Kimengumi, Yui, and Chie visit Rei’s home, where they discover a strange boy in every photo from Rei’s childhood album. This figure is revealed to be Don Harumage, Rei’s destined rival. In a separate event, Don faces difficulties adjusting as a transfer student in his new class. During a storm, he and Rei encounter an unknown creature. They decide to name the animal Pochi and take it to school, leading to unexpected consequences. The narrative highlights the tension between Rei and Don while exploring their shared experience with the mysterious pet.
Episodes
- Ep. 1 · New student Yui Kawa joins Ichio Junior High and encounters the eccentric Kimengumi group.
- Ep. 2 · New Semester Introductions and a Ruleless Bowling Match
- Ep. 3 · Kindness Backfires as Chie Confronts Yui and Jako Embraces Her Contrarian Nature
- Ep. 4 · New Showa-Era Vice Teacher Meets Eccentric Class 1-5 and Gang Leader Wakazo Temekono
- Ep. 5 · Nemesis Don Harumage Arrives / Playing Games Across the Universe
- Ep. 6 · Shy Boy Gou and the news of Ms. Ikari and Mr. Sessa getting married
- Ep. 7 · Kiri's Hide-and-Seek Wars and Kiyoshi Shusse's Unchanging Perverted Nature
- Ep. 8 · Yui and friends visit the beach where Udegumi work, encountering Ja●s and Umibozu, while Kimengumi ignores warnings about fireworks.
- Ep. 9 · Jin struggles to wake up while Yui and Rei face mysterious dream-related issues.