Main Characters:

Lee Taemin

"She's just my roommate nothing more"

Kang Seulgi:

"I'm confused as to what we are right now." 

Other Characters:

Son Naeun Kim Jongin Jung Soojung Oh Sehun Park Sooyoung

"It seems like you guys are more than just roommates"

"By the way it's Kai, remember it. I'll be testing you"

"I'm sorry, who are you again? Do I know you?"

"I like you."

"It was stupid of me to think that he has feelings for me" 

Kim Taeyeon Byun Baekhyun

"I trusted you"

"Let me explain"

Lee Taemin: 

22 Years Old

Naeun's boyfriend

Seulgi's Roommate

Jongin's best friend

Has a flirty first impression

Kang Seulgi:

21 Years Old

Single

Taemin's Roomate

Sooyoung's best friend

Has a cuddly sweet teddy bear first impression

Son Naeun:

21 Years Old

Taemin's girlfriend

Get jealous easily

Has trust issues due to past experiences

Kim Jongin:

21 Years Old

Single

Taeyeon's litle brother

Taemin's best friend

Owns a cafe

Jung Soojung:

21 Years Old

Single

Believes in love at first sight

Has a cold first impression

Oh Sehun:

21 Years Old

Has a crush on Sooyoung

Sooyoung's Neighbor and Colleague  

Park Sooyoung:

21 Years Old

Single but has a crush on Sehun

Seulgi's best friend

Sehun's Neighbor and Colleague

 Byun Baekhyun:

22 Years Old

Taeyeon's Boyfriend

Close friends with Jongin, Taemin, and Sehun

Funny, Talkative, Sweet, Flirty

Kim Taeyeon:

22 Years Old

Baekhyun's Girlfriend

Jongin's older sister

Very protective of Jongin

Homebody, Sweet, Loving, Funny