ROLLER COASTER As their newfound relationship deepens, high schooler Hinana and superstar Kaede must learn how to keep their romance a secret. For starters, Kaede is so busy! But even when he sneaks out to meet Hinana, she finds it impossible to keep up with his freewheeling spirit. Her routine life is suddenly filled with heart-racing excitement, but heartbreaking insecurities are never far behind. Luckily, her childhood bestie Akira is always there to remind her she's not alone. But when Hinana falls ill one summer day, who will be the first to show up at her door...?