Mafuyu Kogarashi stands among the four central protagonists, distinguished by waist-length scarlet hair and sharp magenta eyes. Her typical cantaloupe-colored top, wood brown pants, and cherry red shoes complement her 1.62-meter frame, weighing 53 kilograms with measurements of 83-59-84.

Driven by fierce aspirations in comedy, Mafuyu radiates cheerfulness as the straight man (tsukkomi) in her high school duo Tokonatsu alongside Fubuki Kitakaze's fool (boke). This enthusiasm falters when jokes misfire, leaving her distraught and craving reassurance. Though determined to refine her craft, setbacks spark emotional outbursts, often during clashes with her younger sister.

Her comedic spark ignited early from a professional owarai performance. Now residing in Omiya with her sister Manatsu, she navigates sibling dynamics marked by admiration and friction—Manatsu idolizes Mafuyu yet faces blame for failed routines. While Manatsu forms the duo Tundra with Kanae Kanari, Mafuyu proves less dependable in household matters. Underlying their arguments lies steadfast mutual support.

Mafuyu’s journey thrives on persistence despite crushing failures, epitomized by a disastrous high school culture festival solo act. Her train door gag and anime impersonation flopped, mirroring past defeats and drawing critiques about poor timing and niche material. Collaborative gigs—like an onsen show and Osaka trip—fuel gradual improvement. She balances restaurant work with rewriting routines, bolstered by her former teacher’s praise for sincerity in flawed performances.

Her bond with comedians Fubuki, Rin Araya, and Nayuta Asōgi anchors the narrative. They rally around the mantra "Laughter makes people happy, and if everyone's happy, then I’m happy!", united by dreams of headlining Osaka’s Namba Grand Kagetsu Hall. Their camaraderie fortifies them through creative hurdles and part-time struggles.