"A Story About Getting to Touch My Friend's Sister's Breasts"

Hikawa Kagura occasionally encounters Takakura Riko, the older sister of his close friend Takakura Nashio, when playing at her house. He becomes particularly interested in her, especially her chest. With an awkward tension stemming from their subtle distance, Kagura's true feelings are somehow conveyed to Riko, and this is a story about him becoming aware of his romantic feelings.