Hazumu Osaragi, a shy and introverted high school student, experiences a life-altering event when an alien spacecraft accidentally kills him during a failed landing. The aliens, seeking to make amends, revive Hazumu but inadvertently reconstruct his body as female due to a misunderstanding in the DNA restoration process. This transformation forces Hazumu to navigate a new identity while redefining relationships with friends and family.

Hazumu’s childhood friend, Yasuna Kamiizumi, who had previously confessed romantic feelings to him, becomes deeply conflicted upon learning of the change. Yasuna, who identifies as a lesbian, struggles to reconcile her feelings for Hazumu’s new identity, leading to emotional tension. Meanwhile, Tomari Kurusu, another close friend who harbors unspoken feelings for Hazumu, becomes protective and supportive, though her own emotions grow increasingly complex as she grapples with Hazumu’s transformation.

The narrative explores themes of identity, gender, and love as Hazumu adjusts to life as a girl. The story delves into the evolving dynamics between Hazumu, Yasuna, and Tomari, with each character confronting their own feelings and societal expectations. The alien presence, though initially a catalyst for the plot, takes a backseat to the interpersonal relationships and emotional growth of the main characters.

As the series progresses, Hazumu’s relationships with Yasuna and Tomari deepen, leading to moments of introspection and vulnerability. The manga examines the fluidity of identity and the complexities of love, presenting a heartfelt exploration of how individuals adapt to profound changes in themselves and their connections with others. The story concludes with a resolution that emphasizes acceptance, understanding, and the enduring nature of genuine relationships.