大人はわかってくれない。

Tsumugi, a middle school girl from a humble background, moves into a luxurious high-rise apartment after her uncle offers his place while he's abroad. Here, she encounters two very different boys from her new elite school: Hayate, the fierce and somewhat aloof "mad dog" from the penthouse, and Kei, the princely and kind-hearted boy from the same floor. As Tsumugi navigates her new life among the rich and the privileged, she finds herself caught in a whirlwind of emotions, friendship, and first love. Dealing with class differences, personal insecurities, and the complexities of adolescence, Tsumugi learns about herself and the world around her. (Unreviewed summary by Grok 2)