Kuroe Akaishi / Chloe The protagonist. A high school girl suffering from a mysterious condition where parts of her body transform into a kaiju when her emotions run high. Fearing her illness, she has avoided social interaction, leading to a gloomy personality. Her hobbies include drawing, and she loves sweet treats. Bullies call her "Menhera-chan" or "Gloomy Ugly Girl." First person: I (rough/masculine) or I (neutral). She often slips into "Ore" when excited or being her true self. Second person: you (blunt) / you (rough). Speech style: Ends sentences with "-jan," "-daro," "-jane-yo." When her emotions surge, she becomes talkative, and her clumsy but earnest feelings overflow. Her complete form is a kaiju called Harugon, characterized by heart-shaped pupils. Address terms: Minami-kun, Kotaro.

Arata Minami Chloe's classmate, a photogenic and handsome boy. He is naturally airheaded and has little sense of personal space, frequently flustering Chloe. He has a complex about his body shape from middle school and is very careful about calorie management. He is in love with Chloe.

Manatsu Tomosato A beautiful girl who is a kaiju otaku. She is obsessed with Harugon (Chloe) and follows her around, convinced she is the "Priestess of Harugon." Her devotion is extreme; she wears handmade costumes and interacts with Chloe like a best friend. She is often seen clutching a kaiju plushie. Speaks in a refined, lady-like tone.

Rinko Akaishi Chloe's mother. Despite being parent and child, she has a lighthearted, friend-like vibe. She dotes on Chloe and understands her unique constitution. Single mother.

Raimu Kono A popular influencer skilled at makeup who becomes Chloe's classmate after a class reshuffle. Nicknamed "Rairy." She treats the shy Chloe without prejudice and is a good friend who teaches her about recommended cosmetics. Without makeup, she calls herself ugly or a gorilla and makes "uho-uho" sounds, but she only shows this side to those she trusts, like Chloe.

Jumbo King Profile Owner: The Akaishi family (Chloe's house) Breed: Mixed breed Features: A clever dog Hobby: Treasure hunting Birthday: January 1st

Arata Minami's younger sister is Moa Minami, an elementary school student. Voiced by Miharu Hanai. A reliable elementary schooler with cute twin tails. She is always worried about her brother (Arata), who is floating on air due to his crush.