Netizens are feeling nostalgic about 'X-Man' after seeing Lee Hyori's recent photos.

On an online forum, users discussed the latest set of photos taken by Lee Hyori at Kim Jong Min's wedding shared on her personal Instagram. She was joined by her long-time friend and 'national MC' Yoo Jae Suk, whom some netizens jokingly referred to as an "unexpected acquaintance of Kim Jong Min."

However, veteran Korean fans and longtime viewers of classic variety shows pointed out that the connection was anything but surprising. While Kim Jong Min may be more recently associated with variety shows separate from Yoo Jae Suk’s, the two actually formed a close friendship during their time on 'X-Man,' a retro Korean variety program from the early 2000s hosted by Kang Ho Dong and Yoo Jae Suk.

Adding to the fun, Lee Hyori’s post had netizens laughing with an unexpected shot of Yoo Jae Suk, presumably mid-meal, leading some to comment that he looked like he was caught off guard "while eating something sour."

Known for their hilarious 'sibling vibes,' Lee Hyori and Yoo Jae Suk once again demonstrated their close friendship—this time through a candid, unfiltered photo shared by Hyori.

Lee Hyori also posted several beautiful shots of her wedding guest outfit, wearing a gray sweater paired with a long yellow floral skirt, high-heeled pumps, and a luxurious blue purse.

Additional netizen reactions included:

"I hope they all come out on channel DdeunDdeun lol"

"The photo of Yoo is way too close-up lol."

"Yoo Jae Suk’s expression lolololololol."

"Yoo Jae Suk’s expression is hilarious—his mouth looks like it has so much to say lol."

"I looked at the wedding invitation carefully, but forgot everything because of the last pic lol."

"Ah, Yoo Jae Suk’s last photo is too powerful lolololol. I had to go back and check the title again lol."

"Looks like they were sitting right next to each other lol. Kim Jong Min got married? Congrats congrats."

"In that last photo, I felt like Yoo Jae Suk was staring right at me and I forgot everything lololol."

"Wait, did Yoo Jae Suk cry??"

"Why is Lee Hyori so freaking pretty..."

"Yoo Jae Suk omg lolololololol his face lololololol."

"Kim Jong Min was the manager during SSAK3 days lol."

"LOL true sibling energy lolololol ^^ lol this is insane lol."

"Kim Jong Min was on X-Man a lot."

"During the X-Man days, and also before that—maybe it was the old program 'Donggeo Dongrak'—he appeared often there too."

"Just thinking about it brings up X-Man."

"Yoo Jae Suk probably said some silly stuff again lol."

"Hyori’s outfit is perfectly pretty and suits the mood, and her smile looks genuinely happy. Congrats to Kim Jong Min too."

"Wasn’t Yoo Jae Suk even the MC of the wedding…?"

"Omg thanks to the folks who shared info with me—there's way more than I thought? I’m in my early 20s now so I’ve only seen 'Hangout with Yoo' and 'Infinite Challenge' and haven’t heard of the others ㅠㅠ."

"Kim Jong Min once picked Yoo Jae Suk as the person he feels most comfortable filming with, and he even uses a phone Yoo Jae Suk bought him lololol."

"So happy now that Hyori unnie is in Seoul."

In related news, Kim Jong Min tied the knot with his fiancée on April 20, the same day as Ailee and Choi Si Hun’s wedding.

Congratulations to Kim Jong Min and his new bride!

SEE ALSO: Lee Hyori stuns in all-white look ahead of ‘Just Make Up’ premiere