Jin mesmerized fans with his wide musical spectrum and vibrant energy at the fan showcase “Jin ‘Happy’ Special Stage” on Sunday. Held Saturday and Sunday, the showcase marked the first live performance of songs from Jin's first solo album "Happy." Over two days, Jangchung Arena in Seoul was packed with approximately 3,800 fans.

As Jin appeared on stage by parting the red curtains, the arena erupted into thunderous cheers. "Two days ago, my album was released. I wanted to properly introduce my first solo album, 'Happy,' to Army," said Jin.

The first stage, divided into two sections, was designed with contrasting themes: an office on one side and a road through the vast wilderness on the other. Jin performed the main track "Running Wild," transitioning from the confined office space to a liberating drive through the open landscape, symbolizing a journey toward freedom. Introducing the album in a later segment, Jin said, "When I think of the word 'Happy,' things like BTS, sleep, Army, games and rest come to mind.

Among them, what makes me happiest is Army. I created this album with the hope of bringing happiness to all of you." He also revealed a behind-the-scenes story about the album's only duet track, "Heart on the Window," featuring Red Velvet's Wendy.

"While I was considering potential collaborators for the duet, I happened to have a meal with an acquaintance, who turned out to have Wendy's phone number. I asked him to make a quick call, and asked Wendy to collabora.