Seoul does not do things halfway when BTS comes home.
In the lead-up to the group's March 21 Gwanghwamun comeback concert, the South Korean capital has transformed into what organisers are calling "BTS The City Arirang Seoul" — a citywide initiative developed in partnership with Hybe that runs from March 20 through April 12. The result is a city-scale fan experience that extends well beyond the concert itself.

The celebrations kicked off on album release day, Friday, with landmark buildings across the city lighting up in BTS' signature colour. Media facade displays illuminated N Seoul Tower and Sungnyemun, one of Seoul's historic Four Great Gates, from 7 p.m. A 15-minute drone light show followed above Ttukseom Hangang Park at 8:30 p.m. Large outdoor screens at Gwanghwamun Square broadcast comeback content from Friday evening through midnight Saturday.
Hotels moved quickly to get in on the moment. The Westin Seoul Parnas launched a limited accommodation package that includes a merchandise collection of 100 sets featuring a cushion, blanket, bandana and luggage stickers. Its restaurant Asian Live introduced a special menu built around Korean dishes the group has helped popularise internationally, including buckwheat noodles with perilla oil and hanwoo jeon, a savory pancake made with Korean beef. The lobby lounge offered a themed platter called "Global Signature Bite 7," a riff on the traditional Korean dish gujeolpan reimagined with seven small bites representing cuisines from cities on past BTS world tours.

JW Marriott Seoul prepared a hotel package with a themed gift set and limited-edition cocktails at its Mobo Bar, available through April 19. Paradise City, where BTS member V serves as brand ambassador, added BTS-themed dishes, drinks, a room package and a photo wall for visiting fans.
Retail was equally prepared. Shinsegae Department Store opened a large-scale BTS pop-up at its main Seoul location, operating on a reservation entry system and showcasing the new album alongside official merchandise including the latest light sticks. Lotte Department Store ran a "Welcome Light" project illuminating its Myeong-dong flagship and the Avenuel luxury wing in purple from 6 p.m. to 10 p.m. each evening through Sunday.

Duty-free retailers joined in as well. Lotte Duty Free set up purple experience booths near its Myeong-dong outlet with social media events and roulette-style games. Shinsegae Duty Free made BTS merchandise available at its K-Wave Zone, including albums, plush toys, puzzles and BT21 character products.