Kanji Yarahata, lacking in social skills when it comes to women and unable to form any meaningful connections, encounters a ghost named Aiya who transforms his life. Aiya is on a mission to keep the Yarahata family name alive and takes on the role of Kanji's love mentor, imparting knowledge on how to establish relationships with the opposite sex.
However, complications arise when Kanji secures a job at a convenience store and meets his coworker, the stunning Saki Yoshizato, who also happens to be the owner's daughter. With Aiya's help, Kanji manages to muster up the courage to engage in conversation with Saki and sparks fly. Yet, he remains aware that there is much to learn in order to win over even the most attractive women.