Natsu Andō is a 30-year-old librarian who has never experienced romantic or sexual relationships. She is extremely timid, especially around men, and uses a psychological defense mechanism called the "A.K. Field" (Achi Itte Kochi Konaide Field) to create a barrier preventing male proximity due to her intense phobia of close interactions with men. Despite this aversion, she secretly harbors affection for her kind and caring coworker, Hayao Imagawa, relating to their shared inexperience. She experiences jealousy regarding Hayao's attention toward an inflatable doll.

Two deities, Pī-chan and Kū-chan, manifest to help Natsu overcome her relationship challenges. She shares a sisterly dynamic with them, valuing their support while often finding their advice overly bold. Natsu excels at cooking, cleaning, and nurturing. Her interpersonal growth involves gradually building trust with Hayao, facilitated by Pī-chan's interventions, leading to a mutual romantic connection. The chaotic history between Pī-chan and Hayao's deity, Daigorō, complicates Natsu and Hayao's evolving relationship.