Taecyeon:
- Acts cool
- If he likes a girl, he'd pester her everyday, however he doesn't like any girl anyhow
Nichkhun:
- Has a handsome, baby face
- Is a winking machine, always winks to melt a girl's heart
Victoria:
- Is good at dancing & cooking
- If she likes a guy, she'd cook delicious food for him everyday
Yoona:
- Shy to people she doesn't feel comfortable with
- Doesn't express her own feelings to everyone

Yoona and Nichkhun were childhood friends, they knew each other since kindergarten. Yoona has a crush on Nichkhun. Nichkhun didn't introduce Yoona to the 2PM members, he thought there wasn't a need to, the members had no reason to know Yoona. Which explains why Taecyeon doesn't know Yoona. Yoona knows Taecyeon, they're popular in school.

Yoona and Victoria were friends, they're from the same class. Khun doesn't know Victoria, so does Taecyeon and the rest of the 2PM members.
Yoona and Victoria often hang out together, they were best friends, to be specific.

NichKhun and Taecyeon are popular in school along with Junsu, Junho, Chansung and Wooyoung as they form a band called "2PM".