The story of the original character Kotori Hiinagi.
When the main character, an employee of a bookstore, visits the rest room at night with the door locked, an outrageous scene is in front of him.
It was Kotori Yonagi, a part-time worker, masturbating alone in the break room.
The protagonist continues to watch the scene from the small window of the door, but…
Hey, you saw Kotori’s Secret, right?
DMM
