Ease is the most striking aspect of “Love Yourself: ‘Her’,” which is likely to be this group’s most successful release to date in this country. (Earlier this year, BTS won a Billboard Music Award for top social artist, and it has already placed several releases in the Billboard album chart.) More than any other K-pop group, it is primed to benefit from the retreat of BigBang, whose members are moving toward solo projects and mandatory military conscription.

The members of BTS — Suga, J-Hope, Rap Monster, Jimin, V, Jungkook and Jin — have a range of complementary skills. Jimin is a lithe singer in the Justin Bieber vein, as heard on “Intro: Serendipity.” On some songs, like “Best of Me,” he and Jungkook sing back to back, two shades of tender in a tug of war.

But it’s BTS’s rappers who often dictate the group’s sound, especially Rap Monster, who is gruff without being aggressive. They’re showcased on two songs near the end of this EP: “Mic Drop,” which has a fantastically squelchy beat (produced by Pdogg), and the closing track, “Outro: Her,” in which the group’s three rapping members — Rap Monster, Suga and J-Hope — take turns with extended verses, a rarity for a group that often trades off every four lines, or less.

The beat here, produced by Suga and Slow Rabbit, is lush with instrumentation, and moves with a casual saunter reminiscent of the mid 1990s. And each rapper showcases a different approach: Rap Monster with bluster, Suga with slick talk and J-Hope with tricky double-time rhymes. But there’s no sense of muscling for turf — just the easy swagger of artists who know they’re in control.