Kim Taeyeon 

- girlfriend of Tiffany

- took interior designing

- famous with girls

Tiffany Hwang

- took a business course same school with Sunny and Taeyeon

- girlfriend of Taeyeon

- sweet, loving and caring

Sunny

- annoying bestfriend of Taeyeon

- took arts

Seohyun

- pursue her singing career with Jessica

- bestfriend of Tiffany and Yoona

Yoona

- pursue her dancing career with the help of Hyohyeon

- bestfriend of Tiffany and Seohyun

- girlfriend of Yuri

Jessica

- ex girlfriend of Taeyeon

- pursue her singing career with Seohyun

- friends with TaeNy, YoonYul, Sunny and Sooyoung

Sooyoung

- took an education

- bestfriend of Yuri

- older sister of Taeyeon

Yuri

- took an education with Sooyoung

- cousin of Sunny

- girlfriend of Yoona

Hyohyeon

- dance instructor in Eastern High school

- friend of Yoona, Seohyun and Tiffany

- mentor of Yoona

Guest Characters:

Hyorin - Taeyeon's classmate

Luna - Sunny's classmate

Mike -Tiffany's classmate

Donghae - Sooyoung's classmate

Ailee - Sales lady in New York