Mahoko's grandfather challenges Sanada to a surfing contest to decide if the group can remain on the beach. Sanada, haunted by the tragic death of his former lover, must overcome his deep-seated trauma to return to the water and protect his friends. As the competition ends in mutual respect, Shuree shares a bittersweet farewell with Kenta before departing for Okinawa, leaving Kenta and Suwatee to finally confess their love for one another as the summer season comes to a close.