Yamaguchi-kun Isn't So Bad 13

“Don't go back to your room.” An even better summer than last year! The best one yet!! Their first overnight stay together brings them back to a place filled with memories… At the summer festival, Satsuki's heart races as she realizes just how much closer they've become since last year. Just as the two are about to spend the entire night together, Tsubaki, his childhood friend, appears and throws everything into chaos…?!