BTS returned Friday with its fifth full-length album, “ARIRANG,” ending a three-year, nine-month hiatus and ushering in what the group calls a new chapter: “BTS 2.0.” Released at 1 p.m. through BigHit Music, the 14-track album centers on identity, growth and Korean cultural elements, with production led by Bang Si-hyuk. In a Q&A shared with media, the group reflected on its long-awaited return, creative process and ambitions for the future. Q. How does it feel to return after three years and nine months? BTS: It’s exciting and nerve-racking, but more than anything, it’s overwhelming. Just being able to do something together again as seven makes us grateful. We prepared hard because ARMY (our fans) waited for us. It’s a joy to be back and to show ourselves again. There’s excitement but also fear, but with the members and ARMY, we’re not too worried. Q. What message do you most want to convey through this album? Suga: We thought about what is most like us. Rather than something grand, we focused on “us” itself. Jimin: We wanted to say we will keep moving forward. There