Ești Chiar Chipeș! (2009)

Both are Korean dramas involving a band, as well as a single female living with male band members. Both dramas also involve twins switching.

Mitsuru Adachi's masterpiece of a short story collection "Short Program" was made into a live-action drama starring the global boy group JO1. For the first time, all JO1 members will take on the lead role in one of the eleven carefully selected episodes. The episodes of this diverse youth romance drama are packed with various elements, such as music, sports, and action. Where will the eleven boys who are chasing their dreams go?

A romantic cross dresser love story about FL a Japanese girl look like a boy & ML a Korean man look like a girl sneaking in a school rock band. Based on manga/comic book.

Both these dramas have many things similar like male lead being arrogant, development of love between the leads, 3 boys and 1 girl staying together and caring for each other,etc...
Both stories have entirely different plots but they somewhat give you the same feeling...
You're beautiful is idol drama whereas rooftop prince is a historical and fantasy drama
While i was watching you're beautiful it made me laugh too much and at the same time cry also...i had the same feeling in Rooftop prince also

Both are gender-bender dramas set in the music industry.
- Sompong Non Somchai is a lakorn, meaning a drama from thailand. It's about two girls forced to work for a music company as spys for the police. They have to dress up as men to pass off as male dancers.
- You're Beautiful is a korean drama about a girl posing as her brother, who is A.N.JELL group new singer.

Both dramas are centered around music and idols. You're Beautiful focuses more on the main idol male group while Imitation portrays all aspects of the music idol industry. If you like music and idol themed dramas, then you will enjoy both of these! :)

Tired of the men in her life being lying, married philanderers, Koharu moves away from the city and back home. Once there, she finds her family saddled with debt and no way out. That is until a handsome stranger offers to settle the debt if Koharu agrees to marry him. And if that wasn't crazy enough, he already has two wives!

Haven't watched Runaway Sweetheart yet, but story-line seems similar to the plot in You're Beautiful. A girl who replaces her brother in a idol boy-band, where the other members end up questioning their sexuality. You're beautiful is probably a lot better and more cuter!

Both are light, funny romantic comedies with moments that will pull at your heartstrings and make you cry. The male leads are outwardly cold but are secretly softies inside. Both female leads are very naive for their chronological ages because Mi Nyeo from YB grew up in a nunnery and Seo Ri from 30b17 devoted most of her childhood to playing the violin before falling into a coma when she was seventeen years old for thirteen years due to an accident. Both stories revolve around music, Kpop for YB and classical music for 30b17, both in their own ways make both genres of music sound really enjoyable. Both stories involve the couples falling in love while living together and both stories involve the leads looking for very important missing relatives. Both OSTs are great. Both shows will make you laugh, cry and root for the lovable characters.

Xia Le Di was an arrogant, self-absorbed socialite before her father's bankruptcy left her penniless. She believed that it happened because his competitor stole "Mona Lisa," a revolutionary makeup technology that his company developed. She vowed to get it back. She went undercover at JEALOUS, the rival company, working as an assistant to Chang Yu Jie, the heartless operation manager/lead makeup artist. While she focused her investigation on him, her romantic interest wandered to his charming half-brother Chang Shao Feng. But unbeknownst to her, the half-brother was the real culprit behind the theft.

Fang Jia Hua is the successor of a business. His dream is to open a chocolate store and be an expert in chocolate. He ends up leaving his business and his family to fulfill his dream. Hong Xi En is someone who spent her days slogging and taking up part time work. One day, she ends up working for him and above all, she has to dress herself as a man for the job.

A capable but unpopular showbiz manager, Kazuko, struggles to groom a younger, new male actor, Ryo, whom she had scouted, into a star. An unmotivated Ryo slowly becomes conscious of the pleasures of acting. Bonds of camaraderie grow, and before long, love gradually blossoms between them.