Hinanoi Haruki is a third-year high school student. During his final summer in high school, he reunites with freshman college student Hachiya Banri after a long time. Standing before his idolized senpai, Hina's heart pounds, but his joy is short-lived as he learns the person Banri has a crush on... The person Banri secretly has feelings for is a man. And it turns out he's his younger brother's boyfriend...?! Hina is confused, but before he knows it, he realizes his true feelings lie deep within his admiration... A youthful graffiti story where the arrows of love intertwine!