ドジで気の弱い女子高生・小花井 日葵（こはないひまり）。 偶然、出会った憧れの先輩に近づこうと、同じ高校に入学はしたのだが、待ち受けていたのは、引っ込み思案の自分が引き起こしたお先真っ暗の高校生活。 そんなある日、校舎内で憧れのあの人を目撃し、追跡するのだが、そこに日葵の運命を変える出会いが待っていた！! 美麗絵師・ふなつかずきが切り拓く新境地！ 高校少女伝統空手道漫画!!

Hikari Obanai, a high school girl who is disgusting and weak. By chance, I entered the same high school to get close to the yearning senior I met, but what I was waiting for was a dark high school life caused by my self-recession. One day, I witnessed and tracked that longing person in the school building, and there was an encounter that would change the fate of Sunflower! A new frontier opened by beautiful artist Funatsuki Tsuki! High school girl traditional karate manga!