从很小的时候起，在母亲的引导和教导下，有马公生（花江夏树 配音）便将成为优秀的钢琴师当做了自己的毕生理想，一路走来，亦斩获了不少佳绩。不幸的是，在11岁那年，有马的母亲去世了，而有马亦再也无法听见自己所演奏的琴声，如此一来，他同自己最初的梦想渐行渐远。
在念初三那年，一位名叫宫园薰（种田梨沙 配音）的女生出现在了有马的身边，薰演奏的乐器是小提琴。很快，有马便被薰身上所散发出来的才情和热情所吸引了。让有马没有想到的是，薰竟然指定有马成为她比赛中的伴奏，在薰的影响下，有马渐渐重燃了对于钢琴的热爱，他和薰之间的距离也因此越来越近。

Puberty Syndrome—a rumored, mysterious syndrome that only affects those in their puberty. For example, a bunny girl suddenly appeared in front of Sakuta Azusagawa. The bunny girl's real identity is Mai Sakurajima, a teenage celebrity who is currently an inactive high school senior. For some reason, her charming figure does not reflect in the eyes of others. In the course of revealing the mystery behind this phenomenon, Sakuta begins to explore his feelings towards Mai. Set in a city where the skies and seas shine, Sakuta unfolds the meaning behind his bizarre encounters on women with the said syndrome.

the second season of My Teen Romantic Comedy SNAFU anime television series