The two are starring in a project together.
BTOB‘s Sungjae reveals the brutally honest advice he gave to WJSN‘s Bona.

The two idols recently appeared to promote their new project The Haunted Palace.
Sungjae and Bona have known each other for a long time, and she explained that whenever she needs advice, she asks her sunbae, although she described him as a “precious friend.”
One piece of advice Sungjae gave was to chase the stars, not money, and the host, Park Na Rae, appreciated that, as the idol explained, he even follows that now.
Bona revealed that Sungjae always gave her advice, specifically when it came to working with an agency.
Even things like conflicts with the agency it’s all the same. Just think of it like working with the person who knows you best, even if they’re flawed.
— Bona
Yet, Sungjae joked that Bona was sugar-coating his words, explaining, “This industry is full of jerks. So work with the jerk who knows you best.” The word used by Sungjae could be translated as jerk or thug.
Netizens couldn’t stop praising the bond and advice.
jiyeon would always come to sungjae when she was struggling and sungjae would give her advice 😭🫶
sungjae on agency conflicts: “the industry is full of jerks, so work with the jerk that knows you best” help pic.twitter.com/p1k8L174iK
— cat (@exseolbo) April 9, 2025
and he is so right 😭 cause all companies will take advantage of you anyway https://t.co/ouwQVOCY2h
— ᴊɪʜ (@ilhoonmikael) April 9, 2025
sungjae is right about companies https://t.co/9WqGiXB7B8
— bthreetobe (@bthreetobe) April 9, 2025
jiyeon even talked to sungjae about her time filming 2521 after he got out of military service…….they never really got to talk about it till now but they weren’t joking when they said they had a strong connection and kept in touch over the years https://t.co/p6uGlOINFt pic.twitter.com/LBUA7K9MU3
— cat (@exseolbo) April 9, 2025
You can read about more from the video below.
Female Idol Confesses Up To How Much Money She Would Lend Her Best Male Idol Friend