The Song family's true biological daughter appears, shaking Ju-Ha's world. Seeking an escape from an unwelcoming home, Ju-Ha embarks on a series of blind dates until she meets Sa-Hyeon, who boldly suggests setting a wedding date within minutes of their first date. Just as Ju-Ha starts to develop feelings for him, her cunning younger sister—who has already taken everything else from her—declares her intention to marry him instead. (Source: WEBTOON)

Eun Myeong comes from a very wealthy family, but her life is hell because of her cantankerous stepmother. Unable to bear it any longer, she leaves the family home and finds herself living in the apartment of the mysterious brother of her best friend during his long stay abroad. Problem: He will be back much earlier than expected and in addition, he turns out to be Joon Yeong, the star actor of the moment... How will this forced cohabitation go?

[I'm not a panty thief!!] On the day I was going to confess to my boyfriend of ten years, I ended up stealing the panties that his older brother had taken off. His older brother thought I liked him and ended up reporting me to the police. Oppa, you're mistaken, I like your younger sibling...! **Original Novel:** [Naver Novel](https://novel.naver.com/webnovel/list.nhn?novelId=1058953), [Naver Series](https://series.naver.com/novel/detail.series?productNo=8506580) **Original Webtoon:** [Naver Webtoon](https://comic.naver.com/webtoon/list?titleId=821091), [Naver Series](https://series.naver.com/comic/detail.series?productNo=10642330) **Official Translations:** [Indonesian](https://www.webtoons.com/id/romance/not-you-your-brother/list?title_no=6239), [French](https://www.webtoons.com/fr/romance/not-you-your-brother/list?title_no=6500)