Manaka Komaki is the class representative and older sister of Ikuno Komaki. She has light brown hair typically styled with a light blue slide, spiky bangs, and occasionally a spiky bun, alongside dark blue eyes. Her height is 154 cm with measurements of 83-58-84 cm.

Diligent yet shy, she exhibits androphobia—a pronounced fear of boys. Her bookish, kind, refined, and smart nature coexists with timidity, clumsiness, and a tendency to fluster easily. This leads her to overcommit when helping others, overburdening her as class president and library committee member. She enjoys reading, tea blending, computing, cooking, and shopping, with a noted fondness for sweets.

Her interactions with classmate Takaaki Kouno mark a pivotal development. To address her fear, they conduct training sessions in the library practicing first-name address. Gradually overcoming her anxiety, she forms a romantic attachment to Takaaki. Their closeness becomes apparent when Yuji Kousaka overhears their informal name usage, prompting teasing and heightened attention from classmates.

In the spin-off *To Heart 2: Dungeon Travelers*, she is transported to a fantasy world alongside peers. Assuming a magic-user role, she advances through sorceress and witch classes within the game's mechanics, participating in a quest to defeat a final boss and return home.

Her character appears in *To Heart 2*, *To Heart 2 AnotherDays*, the spin-off *Manaka de Ikuno!!*, the OVA *ToHeart2 adnext*, and the role-playing game *Final Dragon Chronicle: Guilty Requiem*.