Amber Liu:

1. dated Krystal for 5 years
2. knows Victoria has a crush on her and rejected her numerous times

Jessica Jung:

1. the older of the twin ice princesses
2. has dated Tiffany for seven years now

Krystal Jung:

1. the younger of the twin ice princesses
2. has been with amber for 5 years
3. is deathly in love with amber

Seohyun:

1. Tiffany's best friend from high school
2. absolutely hates Jessica
3. has been in love with Tiffany for 8 years now

Tiffany Hwang:

1. is head over heels for Jessica
2. loves to tease Seohyun
3. knows about seohyun's feelings for her
4. has been dating Jessica for seven years
5. has the most beautiful eye-smile

Vicoria Song:

1. has had a crush on amber for 10 years
2. is extremely shy
3. is extremely jealous of Krystal

Kim Hyoyeon:

1. Taeyeon's little sister and girlfriend
2. eventually gets dumped by both Taeyeon and Sooyoung for cheating
3. Huge BoA fangirl

Kim Taeyeon:

1. Hyoyeon' big sister and girlfriend
2. eventually dumps Hyoyeon because of cheating
3. finds sunny lee attractive
4. huge BoA fangirl

Kwon Boa:

1. Yuri's older sister
2. starts developing feelings for Hyoyeon after seeing her dance
3. has been in Japan for past 9 years

Kwon Yuri:

1. Boa's little sister
2. has been dating Sunny for two years

Lee Sunny:

1. has been dating Yuri for 2 years

Lee Taemin:

Im Yoona:

Choi Sooyoung:

Choi Sulli:

Luna Park:

Sakura Yoshimada:

1. is a mega playgirl
2. doesn't believe in love
3. has her eyes on krystal

Yuria:

1. On Tour in korea

Story begins 5 weeks before Jessica and Krystal get their hearts broken mainly to introduce the characters.

Sakura Yoshimada is an original character

also Sakura Yoshimada will be formally introduced last