母を亡くし、ひとりぼっちになった京介は転校先で、声を失った要というクラスメイトに出会う。
しゃべれなくても身ぶりと表情で豊かな感情表現をする要に惹かれた京介は、彼に『カナ』とアダナをつけ急速に親しくなる。
ところが、カナに異常な執着を見せるイトコの哲が、カナとセックスしているようなことを匂わせ、京介を挑発し……!? 切な系純愛の決定版!
After his mother passed away, Kyousuke decided to live alone and transfer to another school. There he met a rather peculiar classmate named Kaname who’s unable to talk. Although Kaname cannot speak, he was able to somehow convey his feelings clearly through writing and facial expressions that made Kyousuke more drawn to him. However, Kaname’s cousin, Satoshi noticed the intimacy developing between the two which he could not approve… A sweet ardent, story of pure love unfolds…