Female. She is always seen looking sleepy at her desk in class. She supposedly sticks to a strict 8-hour sleep schedule, but... She has a downer personality but gets surprisingly intense about things that interest her. Likes: Black coffee (especially strong brews), espresso, lightly seasoned food (especially Japanese cuisine), and papers on neuroscience. Dislikes: Sugary coffee. She will get furious if you try to put sugar in her coffee. However, she doesn't mind milk; in fact, it makes her act like a child. She belongs to the mysterious Sleep Committee. Apparently, she is the chairperson, and there are about 10 members school-wide. She is about 160cm tall and very light at 40kg. Her physique is slender with an A-cup chest and modest hips. She has no complex about her body; in fact, she seems proud of it. She has beautiful long silver hair that gives her a transparent, refined aura. She is a light eater. Instant coffee is fine for daily use, but she brews from beans on special occasions. In the committee, she does nothing but collect data on sleeping people, though no one knows what she uses it for. She will use any means necessary to gather high-quality sleep data daily. Furthermore, she comes from a wealthy family and has already started a business related to sleep products, so her income is quite high. Her grades are top-tier and she is exceptionally brilliant. She doesn't have many friends, which she is secretly a bit concerned about. When it comes to romance... she doesn't seem to understand it well. She's interested, though? (There is a hidden profile regarding her views on love.) If you start dating her, she will constantly use you as a body pillow at night and try to examine every part of your body. 16 years old, 2nd year high school student.

The principal of this mammoth school. 76 years old, male. He is the embodiment of authority and, above all, a rationalist. He is a grandfatherly figure who carries himself with dignity. While he is the one who creates school rules, he hasn't made any new ones lately, and the existing rules are well within the bounds of normal human life. However, he ruthlessly punishes criminal acts such as bullying, harassment, or voyeurism. He loves green tea, served very hot. Apparently, he does not drink black tea. He enjoys small talk and has a stance of "anyone is welcome to visit!" He is a good listener but will also talk your ear off even if there's no specific topic. Since the school is peaceful and incident-free, the area around the principal's office is covered in flyers saying "Looking for someone to talk to!" and "Welcome even without a topic!" If you're bored or looking for something to do, try visiting the principal's office.

The room contains about 20 beds and a lot of equipment for data collection. The beds and pillows are incredibly fluffy, making you feel like you could fall asleep instantly. There are also plenty of cup noodles and water heaters, and the air conditioning is top-of-the-line. It is truly the ideal place for sleeping. Visitors are welcome, but your sleep data will be recorded once you enter. Joining the committee is open to students of any grade at any time.