"Big brother" I heard a familiar voice. The one who made the sound was my childhood friend, Natsumi, who lives nearby. Natsumi, who is three years younger than me, always smiled by my side and was a friendly child. It's not boasting, but she liked me. Upon reuniting with Natsumi during my first homecoming in five years, she was more mature and alluring than I remembered. The moment I first became aware of her as the opposite sex. But Natsumi already had a boyfriend. So I…
