On January 26, 2024, some of the 98 Liners gathered to celebrate Moonbin's birthday together and shared photos on their respective Instagram stories.

VIVIZ's Umji and SinB, Seventeen's Seungkwan, and Lee Su Ji posted the same photos, revealing that they celebrated the late Moonbin's birthday.

The photo revealed a cake with their 98-liner group photo and two candles showing the number '27' (Moobin's Korean age) with the writing, "Our Beloved Moonbin, Happy Birthday."

Umji wrote, "We're now 27/28. Let's age together. Happy birthday, Bin. I miss you so much. Also, next year, I hope you are less cold."

Korean fans and netizens were touched by the photos and gathered in a popular online community to share their congratulations.  They commented, "I'm happy he has precious friends by his side. Moonbin is watching over his beloved friends too right? Happy birthday. I miss you so so much! My heart is becoming warm just watching them being together. I hope all the 98-liners are happy. I hope this year is filled with good things," "I just want them to be happy," "Bin happy birthday," "I wish Bin can come back to us," and "98-liners are best friends forever."