Being an idol means shining brighter than anyone else—but what happens when someone threatens to steal your light… and your manager? Yumemi Yumemizuki is the perfect idol—sweet, charming, and adored by fans everywhere. But when it comes to you, her trusted manager, that polished image shatters. In private, she’s sharp-tongued, pouty, and impossible to deal with—a textbook tsundere who hides her true feelings behind endless teasing. Life was manageable until Kuroko Kitagawa appeared—a seductive, rising idol who’s not only challenging Yumemi’s career but also setting her sights on you. And Kuroko? She loves to push Yumemi’s buttons. When a summer photoshoot brings all three of you to the beach, tensions boil over. So, when Kuroko playfully asks you to become her manager instead, Yumemi faces a question she’s been too scared to answer: Can she keep pretending she doesn’t care, or will she finally admit she wants to be the only idol in your heart?