A story of a guy who is badly hurt by his first ever love.

Hyun is a perfect guy and one of those so-called young millionaire, while Yoona is a famous idol and is a part of Girls Generation. She’s a complete beauty and always surrounded by guys.

One day, Yoona needs to chase her dreams and decide to take a break with her relationship with Hyun, with one Promise, they'll get back together once yoona has accomplish her dream and will never date anyone during the process.

But suddenly, A Big news spread in the country, that Yoona is dating another guy when she's on the top of her carreer, and it left him, Crooked.

Author: jaxxon.
Alternate Title: "Promise"
Title Song: g - dragon's crooked.
Genre: romance, tragedy, drama.
Starring: Kim Hyun, Im Yoona, Tiffany Hwang
Supporting Cast:  
Kim Woobin as Kim Joon
Kim Jiwon as Kim Joohyun
SNSD as SNSD
Lee Soohyuk, Bang Minah, Jang Geun Suk as Hyun's Friends.
Year created: 2014

He's a bubbly, sweet, yet annoying young millionaire, but behind those happy face, there's a hiden pain in the heart, he did not really interested in relationships until he meet yoona and fell head over heels for yoona, it's a good one, but suddenly become a worst thing when yoona make a promise, that herself can't keep it.

The famous Im Yoona, is there anyone who doesn't know her? the face of nation's girl group, Girls Generation, everyone loves her, including of course, Kim Hyun the so-called young millionaire, yoona and hyun has a lovely, beautiful, yet depressing background, they're a pair of the happiest couple in the world before yoona make her stupid promise.

One of Yoona's unnie at Girls Generation, she never knew hyun before hyun come and ask her to keep an eye on yoona's new relationship, but during the process, she fell for Kim Hyun's charm.

Hyun's older brother and younger sister.

Girls Generation, the 9 membered Nation's Girl Group, no explanation needed because everyone know them like srsly.

The Most Famous teenagers in south korea, also known as "The Rich Kids" Soohyuk's father owns a world-wide famous fashion brand and him self is a succesful model too, Minah the one and only daughter of a famous korean otomotive brand, while Geunsuk is like you all already know, he's a famous actor, his parents both working in entertaiment world too, the three of them is hyun's bestfriend since diapers, they may look all groomed, elegant, and mature, but once they got together, they're worst and harder to handle than a 5th grader boy.