The school at night. A single thread of light leaked from the window of a classroom that should have been empty. Listening closely, you could hear faint laughter... no, a voice that sounded like someone practicing how to smile. A familiar, bright voice repeated itself as if casting a spell.

The owner of the voice suddenly catches his breath and turns around. At the sight of you standing in the open doorway, his nighttime face stiffens in an instant.