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Fans began gathering at the international arrivals terminal around 8 p.m., dressed in BigBang T-shirts and carrying banners, light sticks and other merchandise.
They lined up in two orderly rows and kept their voices down while waiting for the group to arrive, taking care not to disturb other passengers.
A group of fans sits at the airport as they await the arrival of their idols.
BigBang's members left South Korea's Incheon International Airport shortly before 5 p.m. Friday.
The group is set to perform at Hanoi's My Dinh National Stadium on Oct. 24 and 25, with tens of thousands of fans expected to attend each show.
Nguyen Van Truong (L), 27, from Hanoi, poses with longtime friends brought together by their shared passion for BigBang's music.
Longtime fans hold up a banner welcoming BigBang, expressing excitement that the group's world tour coincides with its 20th anniversary.
Fans arrive at the airport carrying BigBang's signature crown-shaped light sticks, 20th-anniversary T-shirts and Vietnamese conical hats.
Fans hold up cartoon illustrations depicting BigBang’s three current members: Daesung, G-Dragon and Taeyang.
Phan Viet Hoang (L), 27, said he and a friend traveled from the central city of Hue to Hanoi by sleeper bus to save on travel costs.
A BigBang fan since elementary school, Hoang paid VND10.5 million (US$406) for a ticket to the group's first concert.
BigBang made its debut in 2006 with five members: G-Dragon, Taeyang, Daesung, T.O.P and Seungri.
Blending hip-hop and R&B, the group rose to become one of K-pop's most influential acts, winning major music awards across Asia and attracting fans worldwide. By the early 2010s, its popularity had reached the U.S.
The group released its critically acclaimed album "MADE" in 2015 before the members began their mandatory military service in 2018. "Flower Road" was their final release featuring all five original members.
BigBang made a comeback in 2022 as a four-member group after Seungri's departure. He was sentenced to three years in prison in 2021 for his involvement in a criminal scandal.
T.O.P announced his departure in 2023, leaving G-Dragon, Taeyang and Daesung as the group's remaining members.
The three reunited onstage at the MAMA Awards in Osaka, Japan, in November 2024, performing some of BigBang's biggest hits.
BigBang last performed in Vietnam at the SoundFest music festival in Ho Chi Minh City in 2012, when the group still had all five original members.
