Fans are losing their minds over the bromance between BTS and SEVENTEEN. On Dec. 20, Tuesday, SEVENTEEN shared a story on SNOW, which is the Korean version of Snapchat, and BTS made an unexpected appearance.

The SNOW story showed the group prepping for their day's schedule, with several members treating fans with some cute and funny filters as they joke around in the clip. In the video, which is approximately seven-and-a-half minutes long, a couple of members also use BTS filters to charm the fans.

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The story has many great moments but one that stands out is when Hoshi uses V's filter as he says, "Oh, hello, hyung," after which Jun poses with Jimin's signature peace sign pose. Fans love it when BTS and SEVENTEEN get together for performances and events, but watching them interact on SNOW makes them even happier, if their social media comments are anything to go by.

Watching SEVENTEEN members using BTS filters was the icing on the cake for fans. Many of them took to social media to express their adoration for both boy bands and called for them to collaborate more often.

BTS is one of the most popular boy bands in South Korea today. The seven-member group's latest album, "Wings," has topped charts not only in Korea but also in the United States, according to Billboard. The group recently announced three additional dates for their United States tour, which is called the "2017 BTS Live Trilogy Episode III The Wings Tour." The band sold close to 95,000 tickets for the tour within minutes of being released.

Meanwhile, SEVENTEEN is a 13-member-band that has been divided into three separate sub-groups, each with its own area of expertise. One group excels in performance, the other is an expert in vocals while the third one specializes in hip-hop music. On Dec. 4, the band dropped their third mini album titled "Going Seventeen" and their single "Boom Boom" is killing it on the charts, Soompi reported.

Check out the band's SNOW app story below: