Pol[A]rity

D.O as Do Kyungsoo

shy, introverted, a college student that has to work the fullest to pay his late parents' debt

Song Seunghoon as Do Kyungwon

Kyungsoo's older brother, serving at the army, love his younger brother so much

Kai as Kim Jongin

Kyungsoo's one and only best friend, has an unrequited love for Kyungsoo

Baekhyun as Byun Baekhyun

Kyungsoo's cousin, has a huge crush on Kyungsoo

Ryeowook as Kim Ryeowook

the owner of the cosplay cafe Kyungsoo worked at

Chanyeol as Park Chanyeol

bold, extroverted, loves to be the centre of attention, a famous model-actor

Yura as Park Yura

Chanyeol's older sister

f(x)'s Luna as Park Sunyoung

Chanyeol's cousin who had a crush on Kyungsoo

Kris as Wu Yifan

Chanyeol's manager as well as his bodyguard,

once was a famous idol just like Chanyeol is, Kyungwon's best friend

Suho as Kim Joonmyeon

Chanyeol's sunbae, admired by both Chanyeol and Kyungsoo

Xiumin as Kim Minseok

working in the Park's troops, one of Chanyeol's loyal underlings

Kangin as Kim Youngwoon

working in the Park's troops, one of Chanyeol's loyal underlings, Minseok's older brother

Sehun as Oh Sehun

Kyungsoo's childhood friend that has gone overseas, came back as a new rising actor in South Korea's industry

f(x)'s Krystal as Jung Soojung

Sehun's cousin, admires Chanyeol's older sister, Sunyoung's best friend, has a huge crush on Chanyeol

Luhan as Xi Luhan

working in the Oh's troops, Yifan's childhood friend