Amakute Atsukute Iki mo Dekinai: Bangai-hen "Amakute Atsui Otomarikai"

Ayato finds himself staying over at Rio’s place for the second time. When Rio invites him to take a bath together, Ayato’s heart races with excitement, but of course, things don’t end there...!?
(Source: Frontier Works, translated)
Note: Originally released as a doujinshi, and later re-released under Frontier Works in October 2024.