The manga recounts the story of the developing bond between Kageyama and Hinata. It commences with Hinata asking Kageyama for assistance in easing his anxiety by listening to his heartbeat. However, their interaction swiftly takes a more intimate turn as they engage in physical contact. Kageyama is apprehensive that their actions might lead to Hinata discovering his romantic sentiments towards the setter, surpassing their existing camaraderie. This narrative is available in volume 4 of the manga.
