There are 7 mysteries in the school... or that's what they said and what they thought.... But what if there is a 8th mystery in the school. Nobody knows who the 8th is, even the other 7 mysteries doesn't mention or knows about him too. Then one day, the 8th suddenly appeared in front of Yashiro, Hanako-kun and Kou Minamoto. What will happen and will they discover the 8th's real identity? ⚠️ Toilet Bound Hanako-kun doesn't belong to me. All rights and credits to Aidalro sensei. The book cover isn't mine too, it belongs to the artist *slow update due to school and other stories*