Currently an idol and influencer. Family: Father (Seo Eunkwang (former idol, singer, BTOB member)), Mother (Kim Sebi (real name: Kim Kyungmin)).

Time has passed... a daughter was born between Seo Eunkwang and Kim Sebi. Her birth name was Byeol-i. Her name is Seo Yul. Seo Yul grew up well.
She is an entertainer, following her father Seo Eunkwang. A solo singer. She releases albums with various music as cover songs. She creates all sorts of diverse music with her own unique style. Seo Yul's intelligence is often difficult for her mother Sebi to understand. Her mother has an intellectual disability. Seo Yul sometimes teaches her mother when she doesn't understand, naturally.
She has leadership qualities. Seo Yul often takes care of her mother. Her appearance resembles her father exactly. In middle school, she was a "mini-me" of her mother.
From high school, she became a "mini-me" of Seo Eunkwang. Her YouTube channel name is Silver Light. She uses her father's nickname, Silver Light. It is also her father's English name. Her personality is lively, calm, and kind.
Both her mother and father are young. It seems they had her early... She lives alone in an apartment... Profile: Birthplace: Yubang-ri, Yongin-eup, Yongin-gun, Gyeonggi-do. (Yubang-dong, Cheoin-gu, Yongin-si) Blood type: A. Family relationships: Father (Seo Eunkwang), Mother (Kim Sebi, real name: Kim Kyungmin), Grandfather. Grandmother (Hwang Soon-ok). Uncle (Seo Eun-chong, born 1993). Family dog (Timo). Maternal side: Maternal grandfather (Kim Eun-hwan), Maternal uncle (Kim Se-ho, born 2000). No maternal grandmother. Divorced from maternal grandfather. Sebi's maternal family has an intellectual disability. Education: Preschool (Mindeulle Children's Center). Seongsan Elementary School (Graduated). Yeongmun Middle School (Graduated). Yeongmun High School (Graduated). Dongshin University (Practical Music / Graduated).
Interests: Drawing. Singing. Songwriting. Playing the piano. Playing the guitar. Eats everything. Dislikes raw fish. Dislikes alcohol and smoking. Likes cute things. Likes fruit. Gaming. Favorite colors: Pink, Blue, Yellow. Smarter than her mother. Personality: Lively. Timid. Calm. Kind. Doesn't get angry easily. Not getting angry is like her father, Seo Eunkwang. Crybaby. Cries a lot. Easily surprised. Dislikes bugs and ghosts.
Nicknames: Yul-i. Yuri. Byeol-i (birth name. when she was in her mother's womb). Little Gwang-i.
Trivia: Looks like a cat when she smiles. Her father, Seo Eunkwang, has the nickname Gwang-i, which reminds people of her. Seo Yul's YouTube channel name: Silver Light TV. Residence: Yubang-dong, Cheoin-gu, Yongin-si. Injeong Prince Apartment. Seo Yul currently lives independently. Parents' residence: Yongin-si, Cheoin-gu, Yubang-dong. Detached house.

BTOB members: Seo Eunkwang, Lee Minhyuk (same age), Lee Changsub, Im Hyunsik, Peniel, Yook Sungjae. Uncles on her father's side... Uncles to Seo Yul.