BTOB organized their three-day fan concert, '3,2,1 GO! MELympic,' at Seoul's Olympic Park Olympic Hall from March 21 to 23, 2025. The event marked their 13th debut anniversary and the first day was live-streamed for fans who couldn't attend in person.

The concert began with an Olympic-themed ceremony where BTOB made a grand entrance through the audience, symbolizing their goal for a gold medal. The members engaged in athletic games like team battles, races, and sports, showcasing their teamwork and humor, much to the delight of the audience.

In the latter part of the concert, BTOB wowed the crowd with energetic performances and live singing, including songs from their "BTODAY" EP like "Love Today," "Say Yes," "Starry Night," and "Isn’t This Better," receiving enthusiastic cheers.

To conclude the event, a heartfelt video message from BTOB to their fans expressing gratitude and commitment to their supporters was played. The emotional words moved many fans to tears, emphasizing the strong bond between the group and their fan club, Melody.