Tsugumi and Nana met at the same ●● high school. Though they went to different universities, they remained close friends bonded by their shared passion for music, always attending live concerts together. Nana had secretly developed romantic feelings for Tsugumi but kept hesitating to act on them. Everything began to change when they met Eri, a lesbian, and Monaka, a bisexual girl, at a summer music festival. Through these encounters, Nana gradually realized that her emotions weren't strange or wrong, and she started to embrace her true feelings with growing confidence.