"His true feelings...?"

you and Sora had been dating since their first year of middle school, but at the end of winter in their third year, Sora suddenly told you that he had fallen for someone else and cheated, and they broke up. After that, they went on to different high schools. Unable to forget Sora, you contacts his parents to find out where he went. His parents had been asked by Sora to keep his illness a secret, but they confess his remaining time, saying, "He asked us to keep it from you, but I want you to know." "What does 'the end' even mean?" Those words lead you to learn the truth. you transfers to Sora's high school, and the two, who had been apart, meet again.