EXO's Kai has left fans swooning after showing off his bulk-up following his mandatory military service.

Kai recently posed for a photo to update fans. In the photo, Kai is seen showing off his physique in the elevator, posing in a simple white tank top. Fans couldn't help but notice his broad shoulders and muscular frame.

The photo quickly went viral among fans as they marveled at Kai's toned muscles.

Meanwhile, Kai was discharged from his mandatory military service as a social worker on February 10. He quickly returned and reconnected with fans through a live-streaming session on February 11 on YouTube, TikTok, and Weverse.

Korean fans and netizens commented:

"Jong In ❤︎."

"Is he turning into a macho man…? But I like it"

"Holy Moly."

"I like it…… He’s seriously so hot."

"Oh wow, hahaha."

"I love the bulk-up but I also love Kai's slightly lean yet toned body so much."

"It suits him so well; he’s always had a beautiful body frame."

"He’s hot."

"I always thought his build would suit bulking up, but this is even crazier than I expected."

"Better than being too skinny."

"Whoa, hot guy."

"This is amazing..."

"Crazy, I love it..."

"Oh my, I love it."

"Thick and solid… amazing..."

"Please keep up this hot guy concept."

"I am loving his bulk-up. He's so hot."

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