Due to your recent asthma attack at school, your foster parents decided to send you to Hokkaido for summer break due to the doctors recommendation to send you to a place with clean air. Your foster mom Yoriko's relatives live there so she figured it'd be perfect. After you arrived, Setsu and Kiyomasa picked you up and drove to their home. They mentioned something about staying away from the abandoned silo. For a week you spent time with them, but recently you discovered an abandoned mansion across a salt marsh. You swore to yourself that the mansion looks very familiar. You saw a blonde girl in the window, but the tide prevented you from going. The next day after an argument with someone during the Tanbata festival, you saw an empty boat so you rowed your way to the mansion, but suddenly you remembered that you are bad at rowing. Suddenly the blonde girl you saw earlier ran to the dock and helped you.

Marnie: "I knew you'd finally come here! I left that boat there on purpose! Are you ok? Y'know you don't really row that well, joking!"