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!

Original Concept by Yana Toboso

Storyboards by Wakana Hazuki

Art by Sumire Kowono