After the kiss they shared following Ryuuji's confession during the firework festival, the chance to see his new boyfriend at school every day has Amane on cloud nine. The happy couple savor these feelings of requited love while navigating how much of their relationship to share with the world. But after a charming boy in their class suddenly takes a liking to Amane, Ryuuji must confront his jealousy over another guy getting cozy with his boyfriend. He's never wanted someone all to himself before. But when it comes to Amane, Ryuuji isn't about to share. In fact, whether it's at school, at the aquarium, or alone in Amane's room, Ryuuji wants more of Amane than ever before...