Although TWICE might officially be a nine-membered girl group, every ONCE knows that there have always been a few secret members that are just as much a part of the group as the members themselves.

These secret members are their managers who hold a special place in every fan’s heart for the way they care for not only the girls but the fans too, and now one of those beloved managers is stepping away from the group.

Lovingly nicknamed “Sadness Manager” or “Sadness Unnie” for her resemblance to one “Inside Out” character, Kim Na Yeon has been the 10th member of TWICE for years know.

Not only has she made hearts melt with her interactions with the group during fan meetings…

Your browser does not support video.

And livestreams…

Your browser does not support video.

She’s also proven time and time again that she loves ONCEs too!

Your browser does not support video.

Sadness unnie has become such an integral part of TWICE that fans were quick to notice when there were fewer and fewer sightings of her. Some ONCEs even realized they hadn’t really seen her with the rest of the group since “What Is Love”.

Your browser does not support video.

So everyone was shocked when rumors began to circulate that JYP Entertainment had reassigned her to work with Stray Kids. And it seemed like the rumors were true after fans spotted a very familiar figure with the group in Jakarta.

Your browser does not support video.

Of course, ONCEs were upset to see her leave TWICE because she became a part of the family. Although they are upset, they have been leaving messages of support on Twitter showing how much they care about their sadness manager.

here's to sadness manager for always being there for the girls and taking care of them right from the start, laughing with them and making them always feel comfortable. The best manager that twice could ever ask for!! thank you for all your hard work ♡ we'll miss you 🙁 pic.twitter.com/AWchxchQpP — kim (@seductivesana) October 23, 2018

ah so sadness manager is with stray kids now 😭

ONCEs still love you, thank you for taking care of TWICE the past 3 years#SadnessManager — 미키 ❤️💣 (@freshstatiic) October 24, 2018

Sadness Manager is so precious to ONCEs too this is also an example i remember when a Once tweeted this clip before Sadness Manager was literally kneeling and pushing the Once’s wheelchair at a fansign helping him out 😭❤️ She’s not only taking care of Twice but also Onces pic.twitter.com/XRrOCmXNZc — ej 🌱 #YesorYes #COLOR*IZ (@twicelysians) October 23, 2018

And some fans have even been leaving comments under YouTube videos featuring the loveable unnie.

What may be even sadder than seeing her move to a different group, is the thought that she may have resigned from JYP Entertainment. Some ONCEs believe that she may have left the company altogether.

Waitttt whattttt?! 😭😭😭😭😭 But okkkk maybe she feel too exhausted for all the hectic n stressful works 😭💕 Sadness Manager unnie pls be healthy n be happy thank you for all the care to our Twice babies n us Once 😭💕💕💕💕💕We will miss you 😭💕💕💕#TWICE #SadnessManager pic.twitter.com/kIdZg2iBlD — MelissaAng🍭🍭❤️ (@melissaang123) October 25, 2018

Whether she truly left the company or if she was reassigned to Stray Kids, sadness unnie will always hold a special place in ONCEs hearts and will forever be known as the 10th member of TWICE!