Netsuai Prince – Onii-chan wa Kimi ga Suki

After her mother’s remarriage, Amamiya Matsuri’s life takes a surprising turn as she becomes the younger stepsister of Terzetto, a trio of wildly popular idols in high demand. And as if that weren’t enough, Matsuri finds herself falling for the effortlessly perfect prince among her stepbrothers, all while keeping their romance hidden from prying eyes.