KIHYUN of MONSTA X released his second solo EP, BORDERLINE, on 7 July 2026, the follow-up to his 2025 debut solo release YOUTH.

Where YOUTH looked backward, tracing nostalgia and the shape of who he used to be, BORDERLINE sits in the present tense. The cover makes that literal: KIHYUN photographed at an airport, surrounded by luggage, caught mid-transit rather than settled anywhere. "This album is about the middle of my journey to find myself," he says, "and I wanted to show myself still on the way rather than already at my destination." The suitcases, in his telling, aren't props. They're the accumulated weight of experience, worry, and choice that travels with him regardless of where he's headed next.

That in-between state runs through the whole EP. Built on a rock foundation and stretched across pop, urban rock, and R&B textures, BORDERLINE moves through a wide emotional range across seven tracks: the forward-leaning opener "Borderline," the confessional pull of "Stealin' Air," the search for shelter inside uncertainty on "Domino," the stillness of "Lazy Day" and "Late Night Drive," and the unfiltered close of "Howling." Title track "So Good" sits at the centre of it, built around the idea of trusting instinct over waiting for a "right" answer to arrive. It's a theme KIHYUN says still shifts under him depending on the day. "Even for me, the song feels different every time I listen to it," he admits, "sometimes it can comfort me, other times it can make me feel sad."

Choosing "So Good" as the title track wasn't a straightforward call. KIHYUN describes it as one of the more difficult decisions of the rollout, weighing the technical demands of performing it live in Korea against what he wanted the song to prove about his voice. He landed on the more difficult version of himself. That instinct, choosing exposure over safety, threads through most of his answers here: about solitude, about closeness, about what it means to hand a voice built inside a group to something entirely his own.