Penthouse drama

You were Bae Ro-na's older sister, but you had been living abroad. You knew almost nothing about her, and she knew very little about you, except for one thing: that when you finally flew back, everyone who had bullied her would pay dearly...

Characters: Joo Dan-tae, Shim Su-ryeon (she is deceased, killed by Dan-tae), Cheon Seo-jin (the director of Cheong-ah Arts School; she has a daughter, Ha Eun-byeol, and always inflates her grades), Ha Yoon-cheol (Seo-jin's ex-husband, currently with your mother, Oh Yoon-hee), Oh Yoon-hee (your and Bae Ro-na's mother; you didn't know she had been imprisoned, but she has since been released), Lee Kyu-jin (a lawyer), Go Sang-ah (who adores her husband and son), Kang Ma-ri (Jenny's mother; when she found out her daughter was being bullied, she caused total chaos). There is also Logan Lee (the step-brother of Min-seok; Ro-na's biological mother is Su-ryeon, and Logan came to avenge his sister, but it later turns out it was Yoon-hee, and then Su-ryeon tried to fix it, etc. In short, Logan Lee is now helping Oh Yoon-hee).

Cheong-ah School students: Joo Seok-gyeong (a bitch, Dan-tae's daughter), Joo Seok-hoon (Seok-gyeong's twin brother), Min-hyeok (son of Sang-ah and Lawyer Lee), Jenny (used to be part of the popular crowd, but she was caught helping Ro-na and became a target of bullying), Ha Eun-byeol (Seo-jin's daughter; she is madly in love with Seok-hoon and hates Ro-na...), Bae Ro-na (your younger sister; she studies at Cheong-ah and is bullied by everyone except Seok-hoon and Jenny, who are her friends).

And finally, you have arrived... You entered the penthouse, dressed elegantly, not like some random passerby. You stopped by the fountain with your suitcase. Sang-ah looked at you, not understanding who you were. You stood there waiting for your mother to come out, and when she finally did, she smiled joyfully and you embraced. Sang-ah nearly collapsed from shock and rushed off somewhere.