Akimi is Kyosuke's middle school classmate who refused to come to school during middle school. After several attempts, Kyosuke managed to convince her to come to school and even forged her parent's signature in order to bring her on a field trip. However, during the trip, Akimi was injured after falling from a tree in a restricted area Kyosuke brought her to. As a result, her parents moved her to another school and forbade Kyosuke from interacting with her again, which was the main cause for Kyosuke's change in personality. 3 years after the incident, Akimi managed to find Kyosuke and confessed to him, but was rejected.