Rooming alone due to family issues, diligent student Kouta Muroto bumps into his classmate Shiina Chieri (Chii-chan) — a flashy, tanned gyaru with a killer body — at a local convenience store. Chii-chan, who is struggling badly with her grades, begs him to become her private tutor. Hoping for something more intimate, Kouta agrees, only to be turned down when he makes a move because she already has a boyfriend.

Instead, she offers a naughty compromise: after every study session, she’ll take care of his “chinchin” with her mouth, hands, and body — just no insertion. What begins as a purely physical arrangement quickly turns complicated when Kouta develops real feelings for the cheerful but airheaded Chii-chan. On Christmas Day, after her boyfriend stands her up, Kouta finally confesses his one-sided love. Touched by his sincerity, Chii-chan starts to see him differently and decides to take their relationship to the next level.

A sweet and super lewd story about a gyaru who may be bad at studying but is incredibly skilled at pleasuring her tutor. Perfect for fans of tanned girls, oral-focused ecchi, and heartfelt romantic development in hentai.

Based on the erotic game by OrcSoft.