Yuuji's day couldn't get any worse after being rejected and shamed by the male classmate he fancied. The despondent high schooler finds solace on a park bench where he meets Atsushi, an enthusiastic elementary schooler. Atsushi tries to lift Yuuji's spirits and plants a kiss on him, infuriating Yuuji who storms off, crestfallen that his first kiss was stolen by a kid. The next day, Atsushi shows up at Yuuji's school, deeply worried about him and offering to take responsibility for the kiss. Atsushi wants to protect Yuuji, touched by his vulnerability when he cried. Suddenly, Yuuji's worst day may end up becoming the day he cherishes the most, all thanks to Atsushi's sincere and pure intentions.
