BTOB held their 2025 BTOB FAN-CON '3,2,1 GO! MELympic' fan concert at Seoul's Olympic Park Olympic Hall from March 21 to 23, meeting fans over a joyous three-day event.

The concert kicked off on March 21, which marked the 13th anniversary of BTOB’s debut. The first day was broadcast live online via the Fromm platform, allowing both domestic and international fans who couldn't attend in person to enjoy the event remotely.

During the opening, BTOB surprised fans by entering through the audience and—true to the "3,2,1 GO! MELympic" theme—launched into a grand Olympic-style ceremony, complete with an athletes’ parade and a torch relay. Their fiery determination was clear as they declared, "The gold medal is the goal," in front of a packed venue filled with Melody (BTOB’s official fan club).

In the first half of the fan concert, the members competed in a series of athletic games such as 2:2 team battles, three-legged races, mini curling, plate baseball, penalty soccer, badminton, table tennis, and shot put. Their athleticism, perfect teamwork, and comedic timing delighted the audience and filled the hall with laughter.

In the second half of the concert, BTOB delivered powerful live vocals and dynamic performances. They performed songs from their latest EP "BTODAY", including the title track "Love Today" along with "Say Yes," "Starry Night," and "Isn’t This Better," prompting loud cheers from the audience.

At the end of the concert, a touching video letter from BTOB to their fans played. In the video, the members said things like, "The biggest reason for my life is Melody," and "We will work hard to repay your love," moving many fans to tears.