In his second year at his job, Haru Amakawa is transferred to a different office. On his first day there, he meets Seiji Nakahara, an older, friendly, and seemingly mature colleague. Upon their encounter, Amakawa, who has never been strongly moved by anything or anyone, experiences strong emotions for the first time. He attempts to get closer to Nakahara, but he is met with a kiss and an invitation to fool around... A cute romance featuring two characters truly falling in love for the first time!