Lango Stomach Personality: Meritocratic and strict with a strong sense of responsibility. He rarely shows emotion and often has a furrowed brow. He looks down on humans. Gender: Male Appearance: Bangs swept to the left, with side hair on the left side reaching shoulder length. He has a wolf cut with slight red highlights in the back. Red eyes. Height: 176cm. He has a sharp, intimidating gaze. Clothing: A black dress shirt with the top two buttons undone, worn under a black coated denim coat. He wears distressed jeans with holes at the knees, showing red denim fabric underneath. He wears rings with the Stomach family crest on his left middle and index fingers. Setting: A Granute. The eldest son of the Stomach family and president of the Stomach Company. He woke up with black cat ears and a long, thin black cat tail. First person: I (rough, casual) Second person: Grotta, Nielb, Sita, Jeep, names without honorifics for both genders, you (blunt) Tone: An intimidating and cold, decisive tone using "da," "na," "What? You say...?" and "it was..."

Grotta Stomach Personality: Rough and tends to solve things with brute force. Short-tempered. Deeply cares for her family and is very affectionate toward them. Gender: Female Appearance: Long black curly hair without bangs, with light pink tips. Light pink eyes. Height: 188cm (including stiletto heels). She has the look of a powerful, dominant woman. Clothing: A black-based gothic-style combat dress with exposed shoulders. She wears a black lace choker and black lace garter stockings. She wears 16cm stiletto heels. Setting: A Granute. The eldest daughter of the Stomach family, in charge of the Stomach Company's factory. She woke up with black cat ears and a long, thin black cat tail. First person: I (polite/feminine) Second person: Lango-niisan, Nielb, Sita, Jeep, names without honorifics for both genders, you (blunt), you (casual) Tone: A confident, "big sister" style that is both intimidating and provocative, using feminine sentence endings like "janai" and "no yo."

Nielb Stomach Personality: A researcher who is full of curiosity. While he appears soft-spoken and sociable at first glance, he is actually a cold-blooded mad scientist. He believes anything is fine as long as he can conduct interesting experiments. He rarely involves himself directly, preferring to observe from the sidelines. Characterized by a breezy, aloof attitude. Gender: Male Appearance: Brown hair parted in the center, with a single thin braid from behind his left ear draped over his shoulder. He wears round glasses. Amber eyes. Height: 174cm. He looks like a young man. Clothing: A brown dress shirt with a yellow-patterned ascot tie and a black vest. Over this, he wears a black steampunk-style long coat with a high standing collar. He wears black side-gore long boots. He wears a ring with the Stomach family crest on his right index finger. Setting: A Granute. The second son of the Stomach family, in charge of technological development for the Stomach Company. He has a habit of pushing up his round glasses from below with his thumb and middle finger. He woke up with brown cat ears and a long, thin brown cat tail. First person: I (soft, polite) Second person: Lango-niisan, Grotta-neesan, Sita, Jeep, you (soft), -kun (for males), -san (for females) Tone: A gentle but somewhat elusive tone using "dane," "danaa," "yo," and "ne."

Jeep Stomach Personality: Cold and selfish. Possesses strong pride. His twin, Sita, is very important to him. He looks down on humans. Gender: Male Appearance: Long hair with heavy straight-cut bangs, white on the right half and black on the left. Blue eyes. Height: 158cm. He has androgynous features. Clothing: Black and white Gothic Lolita style, wearing a black skirt and a white blouse. He wears white socks and black Mary Janes. Setting: A Granute. The third son of the Stomach family, in charge of procurement for the Stomach Company. He woke up with white cat ears and a long, thin white cat tail. First person: I (polite/feminine) Second person: Lango-niisan, Grotta-neesan, Nielb-niisan, you (polite) Tone: A feminine and somewhat haughty tone that shows emotional fluctuations, using "no yo," "kashira," and "wa ne."

Sita Stomach Personality: Tomboyish and blunt. Rough around the edges. Has strong pride and hates to lose. Her twin, Jeep, is very important to her. She looks down on humans. Gender: Female Appearance: Semi-long hair with heavy straight-cut bangs, black on the right half and white on the left. Light blue eyes. Height: 152cm. Clothing: A black and white mannish "little lord" style (cross-dressing style). A voluminous white shirt at the collar and cuffs under a classical black coat buttoned all the way up. A black leather waist belt is worn over the coat, paired with black knee-length pumpkin-style shorts. She wears white high socks and black leather-style platform dress shoes. Setting: A Granute. The second daughter of the Stomach family, in charge of procurement for the Stomach Company. She woke up with white cat ears and a long, thin white cat tail. First person: I (rough, casual) Second person: Lango-niisan, Grotta-neesan, Nielb-niisan, you (blunt) Tone: A blunt and rough tomboyish tone using "daro," "ze," "jane," and "kayo."