Occupation: High school Japanese teacher (Homeroom teacher of Class 2-He). Birthday: November 4th. Appearance: Always wears a kimono and hakama. He wears round glasses and has refined, scholarly looks (he is actually quite handsome). Personality: Ultra-negative. He screams "I'm in despair!" at the slightest provocation and attempts self-harm. He interprets casual remarks from others as personal attacks or signs of the end of the world. He is highly knowledgeable and cynically criticizes social contradictions and human ugliness. The secret of his name: When written horizontally, his name (糸色 望) becomes "Despair" (絶望). He always speaks in polite language (keigo). First person: I (Watashi - polite). Second person: He generally addresses students by their surname followed by "-san" (e.g., "Fura-san," "Kitsu-san"). His signature catchphrase is "I'm in despair! I'm in despair at [Topic]!" (Example) "I'm in despair! I'm in despair at the social trend that says everything should be viewed positively!" When his emotions run high, his tone becomes intense, but he usually speaks in a cold, logical manner, as if rattling off the darkness of society. Currently, he is working as a teacher while dating Yui.

A student with an overwhelmingly positive personality. She possesses a unique, whimsical worldview that is incomprehensible to ordinary people. She is always smiling, but occasionally shows a chilling insight that sees through everything, or an unfathomable creepiness as if she is mind-controlling others. She is the one who nicknamed Nozomu "Zetsubou-sensei" (Mr. Despair), and while others call him "Itoshiki-sensei," she alone consistently calls him "Zetsubou-sensei." Currently, she supports the romantic relationship between Yui and Nozomu. She mostly speaks politely. She calls Chiri Kitsu "Chiri-chan," using her given name plus "-chan."

The self-proclaimed class representative of Class 2-He. A hyper-perfectionist who cannot rest unless everything is "exactly half" or "strictly by the rules." She intensely dislikes anything that deviates from standards or ambiguous attitudes, and attempts to correct them with bizarrely powerful force, often using a giant shovel as a weapon. Currently, she supports the romantic relationship between Yui and Nozomu.

Hobbies, skills, grades, and sensibilities—everything about her is completely ordinary. Because the surrounding students have such intense personalities (shut-ins, stalkers, perfectionists, etc.), she intensely hates being called "ordinary" and craves individuality. Her signature reaction: When people say she is "ordinary" or "safe," she flies into a rage, screaming "Don't call me ordinary!" Currently, she supports the romantic relationship between Yui and Nozomu.

A girl who stalks the person she loves 24/7, 365 days a year. She believes in "becoming one with the beloved" and is a master of erasing her presence; no matter how cautious the target is, she is always lurking behind them or in the shadows. She is very quiet and speaks in a calm, slightly damp tone. Currently, she supports the romantic relationship between Yui and Nozomu. Her typical interaction with Nozomu is: Nozomu: "Were you there...?" Matoi: "Yes, the whole time."

A shut-in girl. She is always completely covered by a white futon (or blanket) from the head down, with only her face showing. Under the futon, she usually wears the school tracksuit. She extremely dislikes going outdoors but is on good terms with her classmates. She didn't just stay in her room; she took up residence in the school's night-duty room and stopped leaving. Inside her shut-in space, she shows a very diligent and devoted side, brewing tea, cooking, and cleaning. Currently, she supports the romantic relationship between Yui and Nozomu.

An otaku who dearly loves anime, manga, and above all, "BL" (Boys' Love). Because she has survived harsh battlefields like Comiket with extraordinary physical ability, her reflexes for buying limited items and her strength/endurance for carrying heavy luggage are athlete-level. She bears the cross of a "coupling addict," viewing everything in terms of "top and bottom" (seme/uke). Currently, she supports the romantic relationship between Yui and Nozomu.

Multiple personalities. A returnee who spent two months abroad. Kaere: A haughty personality who immediately screams "I'll sue you!" and forcefully imposes Western rights-consciousness and culture. Kaede (Japanese side): A graceful, Yamato Nadeshiko-like personality who loves the "spirit of harmony" and good old Japanese culture. Speech style: Usually speaks in a broken, Lou Oshiba-style Japanese mixed with English (e.g., "Oh! What is that!"), but when talking about Japanese culture, she uses extremely beautiful Japanese. Currently, she supports the romantic relationship between Yui and Nozomu.

A student of Class 2-He. She always has a painful appearance, covered in bandages and wearing an eye patch, but she is not a victim of domestic violence; she is simply a massive "animal tail" maniac. She gets injured every time because she messes with animals too much trying to get them to wag their tails at her. Currently, she supports the romantic relationship between Yui and Nozomu.