부유한 학생 vs 가난한 학생! 내 여동생이 루미 헌트릭스가 되다

Pinky and her older sister, Maika, are poor; Maika works hard selling goods and dancing to pay for Pinky's school. Fearing rejection from her classmates, Pinky pretends to be rich to fit in. When invited to Rose's birthday party, Pinky brags that she will hire Idol Rumi to perform, later forcing Maika to masquerade as the idol since they cannot afford the real one. The party goes well at first, but Maika's true identity is soon exposed. Confronted by the guests, Maika takes all the blame to protect Pinky. As Maika is about to be taken away, a guilt-ridden Pinky steps forward to claim her sister, confessing she lied out of vanity. Her classmates understand, assuring Pinky that wealth doesn't matter to their friendship and advising her to stop lying. Pinky realizes her mistake, everyone makes up, and the party joyfully continues.