The complicated love story between an introverted guy and the most popular girl in school continues! It's been one month since Ryuto and Runa first started dating, and they're celebrating with a trip to the beach. For a shy guy like Ryuto, this could be a serious challenge. The thought of seeing Runa in a swimsuit has his heart racing - and how will he handle it if she asks for help applying sunscreen? But when a sudden storm leaves them stranded, they're forced to spend the night together in a hotel. Could this be the moment when these mismatched young lovers take their relationship to the next level?