The story takes place in a high school where Nene Yashiro, a curious and adventurous student, discovers a legendary toilet in the school's occult club room. The toilet, also known as the "God of the Toilet" or "Hanako-kun," serves as a portal to a mystical realm where various cursed spirits and powerful entities reside. Nene, along with his friends, must navigate this strange world, helping Hanako-kun and other spirits while uncovering the mysteries of the Toilet of the Dead.