LE SSERAFIM Kazuha's fancam where she is dancing to "ANTIFRAGILE" on Mnet has gone viral because of something that netizens noticed. Continue reading for more details.

LE SSERAFIM Kazuha's 'ANTIFRAGILE' Fancam Goes Viral for THIS Reason

On Oct. 17, LE SSERAFIM made their first comeback since their debut with their second mini-album "ANTIFRAGILE." The EP features six songs, each inspired by the members' individual stories. One of those is the title track, also called "ANTIFRAGILE."

LE SSERAFIM held a comeback show on Mnet on the same day, and as expected, the girls performed their new song while sporting denim outfits with hints of black.

ALSO READ: LE SSERAFIM Was Asked About Kim Garam's Departure-Here's How They Responded

After the event, Mnet uploaded their group performance to the official YouTube channel of their digital studio, M2, as well as the members' individual fancams. Among the fancams, the one featuring Kazuha garnered more attention.

In LE SSERAFIM Kazuha's "ANTIFRAGILE" fancam, the idol is seen wearing a blue tube top and denim pants as she flaunts her slim figure and tall height. But one netizen noticed something more impressive from the rookie idol.

READ MORE: LE SSERAFIM 'ANTIFRAGILE' Exceeds 620,000 Pre-Order Copies; Members Share Thoughts on Latest Choreography

On Twitter, the netizen made a post featuring a five-second clip from Kazuha's fancam. They pointed out that the idol's back muscles show up in some parts of the choreography.

In particular, whenever the girls execute powerful movements, Kazuha's back muscles are naturally revealed.

In a video uploaded last June, the members mentioned that they are working out during their break as part of their preparation for their comeback. So, it appears like the hard work and dedication that Kazuha had put in her constant exercise have paid off, as her back muscles get exposed from time to time.

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On Oct. 18, the Twitter post was shared on the online forum Instiz and everyone couldn't hold back their surprise at LE SSERAFIM Kazuha's back muscles, which are rare to see in girl group members.

Some of the netizens' reactions are as follows:

"Wow. I'm seriously taken aback."

"Wow, that's crazy."

"It's really showing up."

"Kazuha speaks with her back muscles."

"I can't believe what I'm seeing."

Below is the full version of LE SSERAFIM Kazuha's "ANTIFRAGILE" fancam:

LE SSERAFIM Sets 5th Highest First-Day Sales for Female K-pop Artist With "ANTIFRAGILE"

In other news, LE SSERAFIM not only broke their personal record for highest first-day sales but they also set a new record for the fifth-highest first-day sales for a female K-pop artist in Hanteo history.

On Oct. 17, "ANTIFRAGILE" sold a total of 408,833 copies, more than doubling their previous best record of 176,861 copies set by their debut album "FEARLESS." LE SSERAFIM is now the only fourth K-pop girl group to surpass 400,000 copies on the first day alone, following BLACKPINK, aespa, and IVE.

Moreover, LE SSERAFIM's "ANTIFRAGILE" has broken the previous record for the fifth-highest first-day sales for a female K-pop artist set by BLACKPINK Lisa's "LALISA" (330,129 copies).

Congratulations to LE SSERAFIM!

Watch LE SSERAFIM's "ANTIFRAGILE" music video below:

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Written by Maria Scott