THEY won X Factor back in 2017 but their victory was short-lived after Simon Cowell ditched them.
The music boss parted ways with the boyband just one year later, with members saying they were "confused" by the move.
Unlike many of the groups on the show, who were formed during the audition stages, Rak-Su is made up of childhood pals.
Ashley Fongho, Jamaal Shurland and Myles Stephenson shared a video of them dancing together, letting fans know they are still very much together.
However, fans noticed that the fourth member of the group Mustafa Rahimtulla was missing from their TikTok post.
They danced together on the video, with the caption: "When they can't believe Rak-Su are still together but you've been telling them the whole time."
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"Where is the 4th guy can't remember his name," one wrote.
"I thought there was 4 of you," a second added.
"Where's mustafa" asked a third.
Other fans were thrilled to see the boys back in action, with one calling them the "most underrated group ever!"
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"Not me finding it crazy when people ask if your still together or not like where you been man! I defo stick around," a second said.
"omg I loved you guys from day one on x factor n screamed my house down when u won xxx"
In 2020 Rak-Su revealed that Mustafa was taking a break from the band after struggling with his mental health.
Taking to their Instagram page the three boys explained to fans why Mustafa was missing from their content.
"Yo guys what’s going on?" Jamaal began in the clip.
"Unfortunately, this video we are about to share with you right now isn’t going to be the happy and bubbly sort you usually get.
"But, we feel like it’s an issue we should probably talk about because a lot of you have been asking and obviously, even in this video right now, Mustafa’s not here."
"He’s not been around for the past couple of months and going forward he’s not going to be here either," he added.
"It’s his story to tell so there’s a limit to how far we’re going to go," he added.
"But basically, he’s been struggling with some mental health issues and he doesn’t feel like he’s in the right frame of mind to take part in everything we’re trying to do right now."
"Obviously, he’s our brother and has been for a very long time, so the doors are always going to remain open, and once he feels like he’s capable again to step back into the world we currently exist in, then he will be back."
The group was ditched after Simon left his own record label Syco.
Luckily for the band, they were moved to a new label RCA.
In 2019 Ashley Fongho said: "For any artist/label relationship to work it's going to have to be a partnership.
"I feel like for us, knowing what we want, it's really really nice to be in an environment where people are going to help to facilitate what we want."
He added: "Releasing the Rome EP on RCA, everything has been great. We said we wanted to release four visuals we wanted to do the EP and they just supported us.
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"Whether (Simon's) had the chance to sit down and listen to it we don't know."
Bandmate Myles Stephenson added: "We hope he has."