BTS dropped the official teaser poster for their upcoming special "Proof" live event. The group announced they would be performing live on their ninth debut anniversary on June 13.

BTS will be treating its fandom, ARMY, with a live version of "Proof" and 4,000 lucky fans can watch the event for free. Not only that, though. They will also feature a special guest.

A lot is about to happen in the celebration of the group's ninth anniversary. AllKpop noted the special live event would also feature a pre-recording for Mnet's "M Countdowns" with ARMYs.

In an announcement, BigHit Music revealed the recording would be conducted on a special day only for the band members Jin, Suga, J-Hope, RM, Jimin, V and Jungkook and their fans. The company also revealed it had increased the size and number of seats so that more ARMYs could join the event.

The pre-recording will take place at the Jangchoong Stadium on June 13 and can accommodate 4,000 people with additional 100 reserved seats.

As expected, many celebrate the news. In a discussion on The Qoo, a lot of fans express their interest in going.

One fan felt happy that BTS wanted to celebrate the special day with their followers. They also celebrated the fact that 4,000 of them could go watch "Proof" live.

Meanwhile, in the said poster shared on Twitter and Instagram, RM, Jin, Suga, J-Hope, Jimin, V and Jungkook were all seated in an abandoned space, wearing clothes in blue shades, per News18. They effortlessly stole the hearts of everyone with their good looks and charms.

However, aside from the upcoming event, fans want to know who their special guest will be. ARMY starts to investigate the matter and casts theories on who this guest can be.

Many believe it may be Bang Si Hyuk, aka Bang PD, but others assume it can also be Snoop Dogg or Charlie Puth. The latter two have already hinted at possible collaborations with BTS on new songs.

"Proof" is an anthology album that will feature three new tracks, "Yet to Come," "Run BTS" and "For Youth." It will also include unheard demo versions of their biggest songs and three remixed tracks from the record producer Benny Blanco, like "Life Goes On," "Fake Love" and "Blood Sweat and Tears," which were chosen by the ARMYs themselves.

With that said, fans can no longer contain their excitement for what's about to come. BTS will drop "Proof" on June 10.