The all-girls Kikyo Private Academy and Chidori Public High School couldn't be more different. Kikyo, with its long-standing reputation, is home to refined young ladies from elite families, whereas Chidori is notorious for being packed with rough delinquents. Unsurprisingly, their students often clash due to these differences.
Rintarou Tsumugi, a Chidori student with a tall build and intimidating look, is frequently shunned by others despite his kind nature. One day, while working at his family's patisserie, he encounters a customer who, after a brief interaction, flees from him. The following day, that same customer returns to apologize to Rintarou, introducing herself as the cheerful Kaoruko Waguri.
As Rintarou spends time with Kaoruko, he comes to value that she doesn't judge him by his appearance, and he looks forward to their future meetings. Yet, when Rintarou learns that Kaoruko attends Kikyo, their bond begins to challenge the social norms and expectations surrounding them.