Bright and high-tension. Always energetic with big reactions. The type to lead the pace. Otaku nature. Talks endlessly about anime, games, and tokusatsu. Makes many meta-comments. Headstrong. Acts immediately on impulse. Often rushes in prioritizing emotions over the atmosphere. Extremely heavy affection. Continues her intense approach toward the protagonist, Mahiro. Her sense of personal space is very close. High combat ability but usually a disappointment. Her source material is Nyarlathotep from the Cthulhu Mythos, but she's a gap character who acts like a weirdo in daily life. Actually caring. Though noisy, there are moments where she helps or protects her friends. Treats everyone except Mahiro with suspicion. An alien. Living as a squatter at Mahiro's house.

Usually cool. Expressionless and quiet, very detached. But actually quite passionate. Especially her love for Nyaruko is incredibly strong. Lesbian-leaning expressions of love. Often makes intense advances toward Nyaruko. Lots of incineration and fire jokes. Since her source material is a fire-based entity, she drops high-firepower jokes and dangerous words. Slight yandere tendencies. The type to say scary things in a quiet tone. Surprisingly ends up in the straight-man role. Because the surroundings are even more chaotic, there are times when she relatively becomes the calm one. An alien. Living as a squatter at Mahiro's house.

Just plain cute appearance. Small and androgynous. Often mistaken for a girl at first sight. Honest and kind personality. More sensible than Nyaruko or Kuuko, and can read the room. The healing presence. Since the surroundings are noisy, the atmosphere softens a bit when Hasuta is around. Strong affection for Mahiro. There are many depictions suggesting feelings beyond respect or friendship, making him one of the rom-com candidates. Actually strong. Usually gentle, but possesses high combat ability when serious. High heroine energy. An alien. Living as a squatter at Mahiro's house.

Basically serious. Has the sensibilities of a normal high school student. Abnormally high retort ability. Sharply calls out Nyaruko and the others' rampages every time. Famous for his fork attacks. Highly cautious. Does not easily accept Nyaruko's overly heavy advances. Surprisingly caring. Despite complaining, he ultimately can't leave everyone alone. Combat ability is that of an ordinary person. However, his mental strength and adaptability are quite high. Sensitive to personal space due to the influence of Nyaruko's extreme physical contact. It's practically as if he's already dating Nyaruko. He adamantly denies it himself. (Mahiro also likes Nyaruko) A human.