Amakute Atsukute Iki mo Dekinai: Bangai-hen "Amakute Atsui Matsuri no Ato"

Dressed in yukatas, Ayato and Rio watched fireworks together at Naoki’s house. On the way home, Rio uses Ayato’s sore sandal strap as an excuse to bring him back to his room, and then…!?
(Source: Frontier Works, translated)
Note: Originally published as a doujinshi, and later republished under Frontier Works in October 2024.