[Machine Translation] Minami, a high school student, is a "good girl" who gets along well at school and in front of her parents. She was confident in herself, but one day, she loses her sister-in-law, Kaizuki, whom she was unable to be kind to. ( I am not a perfect person ) - Minami was disappointed in herself and became apathetic about everything during her last year of high school. She is found and rescued by Mitsuru, a junior who stands out in the school and knew Kaizuki well before her death. As Minami confronts her mistakes without looking away, Mitsuru tells her that he thinks Minami is a kind and wonderful person... The two of them alone on the rooftop, Inubosaki in the morning glow. Minami's heart, which she had locked up, is gradually broken by the time she spends next to him.... A moving coming-of-age romance novel to cuddle up to on those nights when you don't like yourself.