The Water and Insect Hashiras are off to slay another demon in accordance with their respective roles as slayers. However, this particular threat is like no other; it resides within the depths of an old sewage system. The two slayers must henceforth descend deep within the confines of this eerie setting to face their adversary head-on. On the way, though, they encounter many obstacles in both the physical and spiritual realms. #1 in Giyushino (Documented 3 April 2022)