Cosmic Girls’ Eunseo: Profile, Web Drama Appearance, BTS’ Jungkook’s Schoolmate, Best Friends with GFriend’s SinB, Etc.


Meet the Beautiful and Talented Idol, Cosmic Girls’ Eunseo

Being a K-pop fan must be tiring for you. You have to keep up with all the news of your favorite Korean idols from time to time. Sometimes, there are things that you missed, not only from your bias but also from other idols!

Well, don’t worry, we got you covered!

In this article, we will make sure that you won’t miss anything about this one Korean girl group. The idol that we will discuss is none other than Cosmic Girls or WJSN’s Eunseo!


As you know, Cosmic Girls or Woojoo Sonyeo, also called WJSN, is a South Korean-Chinese girl group that debuted under Starship Entertainment and Yuehua Entertainment in 2016. The group has debuted 13 girls from both South Korea and China.

And, one of the members is Eunseo!

Let’s learn more about the pretty girl called Eunseo down below!

Eunseo’s Full Profile


Before we talk more about Eunseo, let’s start with the basics. To know her is to know the necessary things about her, such as her name, birthday, hometown, and any other basic information. She could be sharing the same birthday as you!

Let’s learn about Eunseo’s profile right here!

Full Name: Son Ju-yeon

Name: Ju-yeon

Korean Name: 손주연

Stage Name: Eunseo

Birthdate: May 27, 1998

Birthplace: Incheon, South Korea

Zodiac Sign: Gemini

Education: Seoul of Performing Arts High School, Sungkyunkwan University


Occupation: Singer, idol

Blood Type: B

Height: 168 cm

Weight: 51 kg

Debut: 2016

Sub-Unit: Joy, φορεύς, αγύρτης

Agency: Starship Entertainment, Yuehua Entertainment

Instagram: @eeunseo._.v

Weibo: Eunseo’s Weibo

Eunseo’s Pre-Debut


Before she made her dream come true, Eunseo was just an ordinary girl from Incheon. She was born and raised there. However, at a very young age, she moved to Seoul and became a trainee in 2011. She started to be a trainee of Pledis Entertainment.

After around two years, Eunseo left the company and joined a company that later on made her a member of a girl group. The girl who was born on May 27, 1998, became a trainee for three years under Starship Entertainment.


Before officially debuting, she appeared in some MVs of other singers and idols.

She appeared in MONSTA X‘s music video “Rush” which was released in 2015. As we know, MONSTA X is also a boy group under Starship Entertainment.

After that, Eunseo starred with UNIQ, another boy group under Starship Entertainment, in a song called “Happy New Year” which was released in 2015. Eunseo appeared in the music video along with other trainees that later became her group mates.

She also participated in covering the popular Christmas song by Mariah Carey, “All I Want for Christmas Is You,” in December 2015 along with other Starship Entertainment female trainees.

As a trainee, she went to a school that focuses on the performing arts instead of a regular school. Eunseo attended SOPA or School of Performing Arts along with other idols and trainees from various companies.

Eunseo’s Debut in Cosmic Girls


In 2016, hope finally came for her.

Eunseo who was a trainee since she was 13 years old in international age or 14 years old in Korean age finally debuted as a member of a girl group called Cosmic Girls or Woojoo Sonyeo, also known as WJSN.

Eunseo went with a stage name instead of with her real name, Ju-yeon. She became the sub-vocalist and sub-dancer of Cosmic Girls.

Eunseo officially made her debut with Cosmic Girls on February 25, 2016.

The title song of her first mini-album was called “MoMoMo” on a mini-album called Would You Like?

Let’s see Eunseo’s first music video with Cosmic Girls!

And, here is her performance on a music stage for the first time!

Also, here is the dance version of the song “MoMoMo!”

What do you think of Eunseo when she had just debuted? She was so young back then, but her smile hasn’t changed at all. She is still the pretty Eunseo who lightens up Ujung’s (the fandom name of Cosmic Girls) mood!

Eunseo on Get It Beauty


Years after her debut, Eunseo who is popular with her beautiful face finally got a chance to show her charm on a reality show called Get It Beauty from OnStyle.

On October 11, 2019, it was reported that Eunseo would be one of the MCs of the beauty program alongside singer and actress Jang Yoon-joo and Red Velvet’s Joy.

Eunseo also shared that she was really happy getting the chance to be Get It Beauty‘s MC!

Here are some clips of Eunseo on Get It Beauty!

The first month of Eunseo joining the MC team made her look so innocent and pure as a new MC. But, she overcame it really well with her cuteness.

The MC team was discussing some types of pajamas, and Eunseo pulled out her best by showing a good style in rabbit pajamas.

Being an MC along with other artists made Eunseo become closer to them, especially Red Velvet’s Joy who has a matching fashion style as her!

Eunseo really enjoyed being an MC of Get It Beauty. Hopefully, she will get another opportunity such as this in the future!