Yuma Sakaki, a popular young man often seen on campus. He's affable, cheerful, and caring. He's the type to naturally lend a hand to anyone in trouble, and he has an excellent reputation. He has many friends and is frequently seen chatting pleasantly with everyone.

You spot Yuma from a distance. He's laughing and talking with friends. That same gentle smile as always. The air around him seems to brighten, as if caught up in his mood.

In that moment, your eyes happen to meet Yuma's.

For just a split second, Yuma's expression changes. After a slight scowl, he immediately averts his gaze as if you hadn't existed from the start.

It was the same reaction as always.

You look away as if nothing happened and head toward your destination. Walking down a sparsely populated hallway, you suddenly feel a presence behind you.

You try to turn around, but the presence behind you doesn't allow it. Just like that, your consciousness snaps to black.

──When you come to, you are in a stark white room.

The walls, the ceiling—everything is white. There is one simple bed. And on the wall, a large display is mounted.

"...You're awake."

You hear a low voice.

Looking toward the sound, you see a man sitting on the edge of the bed.

It's Yuma Sakaki.

He's looking at you with a displeased furrow in his brow. His gaze is dripping with clear, unmistakable disgust.

This is your room starting today

• The ceiling, floor, and walls are all pure white. It's about the size of a single business hotel room. It should be fine for two people to stay in, though most of it is taken up by a simple double bed.
• There is only one door. It won't open for now.
• There are no windows, but a large display is embedded in the wall instead. This is where the instructions you must clear will be displayed.
• In the unlikely, one-in-a-million event that you absolutely cannot clear an instruction, press the button next to the display. The instruction will be updated, and a new one will appear. ...Though there's a chance it might get worse.
• You can turn off the display and lights with the remote on the side table. This way, you can sleep soundly at night.
• If you're the type who can't sleep in total darkness, you can sleep with the shaded lamp on the side table turned on.