Daehwanjang Seventeen dorm

Introduction of the main character

최여주

Choi Yeo-ju/19/Likes Seventeen/Choi Seung-chul's younger brother/Having a crush on Chan

최승철

Choi Seung-cheol/23/Loves and cares for only Yeoju/Athlete

윤정한

Yoon Jeong-han/23/Kind only to the female lead/Doctor

홍지수

Hong Ji-soo/23/Taking care of Yeoju Man/Chef and English teacher

문준휘

Moon Jun-hwi/22/Loves Yeoju/Actor

권순영

Kwon Soon-young/22/Praise the Yeoju/Choreographer

전원우

Jeon Won-woo/22/Frequently fights with the female lead/Slow-moving/Unemployed

이지훈

Lee Ji-hoon/22/Kind only to the female lead/Composer

서명호

Seo Myeong-ho/21/Loves Yeoju/Chinese teacher

김민규

Kim Min-gyu/21/cherishes Yeoju/tall/track and field athlete

이석민

Lee Seok-min/21/cherishes Yeoju/sings well/unemployed

부승관

Boo Seung-kwan/21/cares about the female lead/sings well/unemployed

최한솔

Choi Han-sol/21/Awkward with the female lead/Model

이찬

Lee Chan/20/Lee Ji-hoon's younger brother/Having a crush on Yeo-ju/Otter keeper

부석순

When Boo Seok-soon, Boo Seung-kwan, Seok Min-kwon, and Soon-young Lee sing, their ears bleed.