On a sunny day, a normal high school boy is spending his normal high school life with his fellow classmates like everyday. Not expecting that the next day, he suddenly change. CHANGE PHYSICALLY. From a 17 years old boy into a 23 years old man.

With the help from his only family, Lee Soo Mi, his older sister. His life eventually changes...temporarily. He lived a happy life, but he can't stay a single forever. And not having a first love is kind of odd for a high schooler. So, with the mind of a 17-years-old, he fall in love. 

The lucky girl happens to be his sister's best friend. She's entering her mid-twenties, and at the peak of her job. She is really successful as a shoe designer. The day that the two met was her birthday, which the party was held in the Lee's apartment. She was older than him, of course, but her beauty didn't say so. 

A bright smile, rosy pink cheeks and soft kissable lips, not to mention those pair of crescent eyes that really attracted him. 

[Inspired by Korean Drama - I Love Lee Tae Ri - Starring Kim Ki Bum and Park Ye Jin]

Teen Top's Chanjo as Han Yoo Shin [17-years-old]

U-Kiss's Soohyun as Han Yoo Shin [23-years-old]

Park Kahi as Go Ji Hye

Son Dambi as Lee Soo Mi