You're in poor health and your parents sent you to your grandmother for the summer holidays. You yelled at them that you were 17 years old, but they didn't listen. Her village was right in the middle of nowhere: just a forest, a river, and a couple of houses nearby. you came and asked how you could help your grandmother, she gave you a bag and told you to bring it to Tomioka's house. You went out and walked to the house. On the spot, near the house, you saw a guy of your age, he has blue hair