Holy Water (液体の入った小瓶 Ekitai no Haitta Kobin , lit. "Vial containing liquid") is an item found in Corpse Party: Book of Shadows.
Corpse Party: Book of Shadows
Episode #2; 『Demise』
After using the Bandages to make a makeshift rope, Mayu descends into a hole in the ground floor into the underground bomb shelter with the help of Yoshiki and Nana in order to acquire a shining object which turns out to be a bottle of water.
After climbing up Yoshiki questions the use of the water but Nana is able to identify it as holy water as her friend Hikari always carried a bottle around with her as a protective charm.
The item is used in order to clear the path to the third floor and the reference room as it is blocked by hostile red spirits.
- Nana mentions that the holy water belonged to her friend Hikari during the chapter we learn of Hikari's demise. It is most likely that the bottle belonged to her but she was unable to use it.