Apathy - Inaba Hyakumantetsu in Narugami Gakuen Reikaiki

Collaboration between Inaba Hyakumantetsu, formerly called Fuhikii, who is a video maker, and Iijima Takiya. The game was showcased on Niconico and Youtube by Inaba Hyakumantetsu, starting from April 24th 2023, to May 7th. The game was made unavailable after the 3rd September and there is no plan to resell it.