Tada Banri and Kaga Kouko have been enjoying the bliss of their new romance, yet there's already trouble in paradise. Memories from "Old Banri" are beginning to surface and the change in Banri's personality has Kouko feeling insecure. Determined to prove his feelings for her, Banri invites Kouko to the beach over summer vacation. But travel isn't cheap, and when Banri gets a part-time job to save up the money, he finds himself working alongside none other than "Old Banri"'s love interest, Linda-senpai! How will Banri and Kouko's relationship fare in the face of its greatest challenge yet?