文化祭の出し物は……まさかの「ハイレグ喫茶」！？高身長が自慢のみつはちゃんは、男子たちの悪ノリや同級生女子たちのお願いを優しさで断れず、股上限界突破の食い込みハイレグコスプレを着せられ、自慢の美脚を晒して接客するハメに。しかし、その「エロ脚」の破壊力に理性を飛ばした客が校内外に続出！断りきれないお人好しのみつはちゃんは、悶絶必至の「裏メニュー」を振る舞うことに…。校則ギリギリ（いや、アウトだろ）を攻める、股下90cmのえっちな学園AV！
The school festival's offering is… a "high-cut swimsuit cafe"?! Mitsuha, who is proud of her height, is too kind to refuse the boys' pranks and the requests of her female classmates, and ends up wearing a high-cut swimsuit that pushes the limits of what's possible, forcing her to serve customers while showing off her beautiful legs. However, the destructive power of her "erotic legs" causes customers both inside and outside the school to lose their minds! The good-natured Mitsuha, unable to refuse, ends up serving a "secret menu" that is sure to drive customers wild… A naughty school AV with a 90cm inseam that pushes the boundaries of school rules (no, it's definitely against them)!

– JavGG.net