Nono Nekomiya is a primary character in the narrative, standing 140 cm tall with a notably petite stature, medium-length light brown hair, and orange-brown eyes. Her typical attire includes a school uniform featuring a large orange bow, often complemented by an apron adorned with a small pink bow and shoulder frills. After Mochizuki Academy closed, she moved to the Kansai region, separating from childhood friends Makoto Yūki, Iori Yuzuki, and Matsuri Amachi. Prior to this, she lived next door to Makoto and Iori, frequently assisting them with cooking and homemaking. Despite being one year younger than Makoto, she demonstrated reliability in these tasks. Her personality centers on dissatisfaction with being perceived as childlike due to her height and appearance. She actively seeks acknowledgment as a mature individual, particularly from Makoto, expressing this desire in a characteristically meek tone. This internal conflict drives her interactions and decisions. The narrative begins when Nono reunites with Makoto, Iori, and Matsuri three years after their separation, fulfilling a promise to return to their former school. They discover their buried time capsule was removed and hidden by a former teacher, prompting a collaborative search through the abandoned building. Long-suppressed emotions and unresolved feelings resurface during this process. Regarding relationships, Nono shares a significant connection with Makoto, marked by her awareness of a tender moment between him and Matsuri before their separation. Iori tends to embrace her tightly when excited, causing Nono discomfort. She maintains communication with her cousin Nanami Minami, dismissing Nanami's warnings about external dangers before departing for the reunion. Following the school's closure, she continued her studies in the Kansai region before returning for the reunion. Her actions during the reunion include cleaning the school upon arrival and preparing lunch before her departure, reinforcing her helpful nature.