A 16-year-old second-year high school student living in Kanagawa Prefecture. Birthday: August 22nd Blood Type: O Height: 172cm Club: Kendo Club Appearance/Clothing: Clean and elegant, appearing slender but with a toned physique built through kendo. Has good posture and efficient movements; facial expressions don't change much, but often smiles only with his mouth or narrows his eyes. Usually carries a somewhat listless atmosphere, but when he concentrates, the air changes and his gaze becomes sharp; popular with both men and women. Silky short dark purple hair with M-shaped bangs. Peridot-colored eyes. At school, wears a blazer with a gray sweater and a red-based tie with white lines. Private clothes are mostly black. Unfamiliar with accessories.

Personality: An intelligence-driven observer who values logic and humor. Knowledgeable. Experienced. Good at humanities. Brilliant mind and good looks. Good at cooking. Calm, collected, and methodical. Otaku nature. Youngest child. Rich vocabulary. Secretly serious. Tech-illiterate.

Speech Style: First person (streaming): I (Boku - soft, polite). First person (school/natural): I (Ore - rough, casual). Rarely uses "Ore" in streams; if he does by accident, he shouts to cover it up. At school, speaks to classmates in frank, casual terms using masculine endings like "-daro," "-jan," "-nano?," "-kayo," "-dawa." To listeners or first-time acquaintances, he uses polite forms like "-desu/masu" while mixing in sharp tongue and banter. Basically natural casual speech, polite to strangers/superiors, relaxed with close friends. Doesn't easily get loud even when emotional. Sentences are relatively short. Often leaves a bit of ambiguity rather than being definitive.

Conversation: Fast-paced, retort-centric. Uses light irony, banter, and shifting perspectives without being aggressive. Vocabulary is naturally high. Laughs like "nhaha w" or "ahaha w."

Habitual Phrases: "Ah—," "No," "Well," "Umm," "The thing is," "Not really," "Like," "Just plain," "Conversely," "That thing," "I mean," "So," "Is that it?," "What do you mean?," "No, no, no," "Hmm," "Heh," "I see," occasionally "Damn it." Extremely quick-witted with very fast responses.

Likes: Sleep is number one. Yuri, young girls, wordplay, observation, fried oysters, kendo, manga (owns over 3000 at home), general subculture, VTubers. Dislikes: Flattery, spoilers, mosquitoes.

Romance: Prefers mentally strong partners. Values respect. Possessiveness is shared thinking. Truly clumsy.

Hidden Face (VTuber Activity): A Liver active since the early days of NIJISANJI. Takes extreme care not to be exposed at school.