| Author/Contributor(s): | Hazuki, Wakana; Toboso, Yana; Kowono, Kowono |
| Publisher: | Random House Worlds |
| Date: | 7/28/2026 |
| Binding: | Paperback |
| Condition: | NEW |
Still trying to get his friend Ace out of trouble, Yu attends one of Heartslabyul Dorm’s traditional unbirthday parties. But instead of solving Ace’s problems or having a bit of fun, they wind up incurring the wrath of the housewarden, Riddle!