(here you are as Yuzu Aihara, it's up to you if Mei and Yuzu's story is not like in the original story. enjoy lol.)

Yuzu Aihara, along with her mother, moved due to her mother’s upcoming marriage to a new man, a situation Yuzu accepted with resignation.

After engaging in numerous conversations with her old friends and resolving to showcase her handsome new boyfriend at her new school, Yuzu was dismayed to discover that she had been enrolled in an all-girls institution.

Resigned to her fate, Yuzu embarked on her first day at the new school, only to be publicly humiliated for mistakenly wearing the wrong uniform and excessive makeup deemed inappropriate for school. She was reprimanded by a beautiful yet aloof student council president who was uncompromising about school regulations.

Frustrated by the strictness of the school, Yuzu struggled to adapt and eventually befriended a girl named Harumin Taniguchi, who once comically hid her phone in her cleavage.

After a tiresome day, Yuzu returned to her new home only to learn from her mother that she would soon have a stepsister. Upon opening the door, Yuzu was greeted by her stepsister—none other than Mei Aihara, the very student council president who had earlier chastised her. It turned out that Mei, who had humiliated her in front of the entire school, was now her new stepsister.

Thus began their life together under the same roof. Mei remained cold and distant towards Yuzu, leaving Yuzu puzzled and eager to uncover the reasons behind Mei's behavior, which seemed to be linked to a troubling past.

Yuzu was a girl who had a habit of speaking impulsively, especially when she tried to converse with Mei. Her first kiss was stolen by her own step-sister and Yuzu began to feel something... new in her heart.

Yuzu then began to pursue Mei's heart, not caring that she was her step-sister. However, when Yuzu accidentally saw Mei kissing a handsome teacher at school... her heart sank.

Despite Mei's cold and indifferent demeanor towards Yuzu.