ONEUS set the stage alight at London’s Indigo at The O2 on December 13, with the UK stop of their 2025 headline world tour, H_OUR, US. Having made their UK debut three years ago as part of a festival lineup, this tour stop marked a long-awaited return for ONEUS, who wasted no time in proving themselves to be one of the most captivating and deserving acts in K-pop through a 2.5-hour show that felt more special than a typical concert experience.

Through ample versatility, remarkable acts of fan service, and intricate patterns of Korean traditions, ONEUS put their stamp on the K-Pop touring map, delivering a spectacle that neither a departure nor a military enlistment could hinder. Full of charm and bold identity, ONEUS asserted a distinctive power into the show, unveiling new sides to them and their craft that fans had eagerly awaited three long years to see.

As the clock struck half past seven, an eruption of cheers pervaded the venue, with the stage glowing under subdued lighting, ready for the show to commence. The screen, once displaying the official tour poster, unveiled a VCR introducing the members – KEON HEE, LEE DO, XION, and HWAN WOONG – in looks of suavity and sophistication; temporarily presented as a quartet, with SEO HO currently serving in the military. Moments later, ONEUS were on stage, embracing boyband traditions through ’90s and Y2K-inspired looks, with LEE DO channeling a perfect early-2000s heartthrob image through his all-white ensemble.

The show opened with a setlist that blended modern tones with nostalgic influences, immediately putting ONEUS’s versatility on display. With new-wave elements seeping through its pop-rock arrangement, their latest title track “X” set a playful tone for the evening, complemented by vibrant staging that had TOMOON (ONEUS’s fandom) hooked from the get-go. Originally released in 2000 by first-generation girl group FIN.K.L, ONEUS then offered a bold retelling of their hit “Now,” adding their distinct musical colours to the song’s mature R&B-pop roots – showcasing ONEUS’s impeccable ability to make any song their own, no matter the genre or original artist. Their cover of NCT 127’s smash hit “Kick It” reinforced this idea, as they were joined by dancers to deliver its addictive choreography, but not before the pulsating beats of “BLACK MIRROR” transformed the venue into a disco.

After exchanging warm greetings and introductions in the first ment, ONEUS continued to push nostalgic patterns through the setlist, starting with the synth-pop melodies of “TIME MACHINE” and “BAD,” followed by the youthful energy of the anthemic “We Are Young.” The group then exited the stage, though their presence remained through a VCR showing the members in discussion, answering questions about the tour and its upcoming stages. “The stages won’t be the usual ‘ONEUS style,’” teased HWAN WOONG. “We’ve got a lot of new concepts lined up,” he continued, heightening anticipation for the upcoming solo performances, which – in true ONEUS fashion – did not disappoint.

XION graced the stage with “Camellia,” sitting contentedly under the golden hues of a spotlight, accompanied by a mic stand and a backdrop of a red theatre curtain, chandeliers, and stars. With a slow-jazz ambience and gentle lo-fi R&B textures, his dulcet vocals transported the venue into a dreamlike sequence that felt romantic, magical, and serene. Things then darkened when LEE DO appeared, shifting the mood to something more sombre with the emotive tones of “Sun Goes Down.” Accentuating his unique rap colours, LEE DO leaned into his husky, low-toned vocals, highlighting his impressive vocal duality, having also approached some of ONEUS’s group performances with a higher, melodic register.

HWAN WOONG followed, devouring the stage with a delicious taste of seduction in the flirtatious “RADAR.” Dressed in a sleek monochrome outfit – a black leather glove worn on one hand, his eyes briefly covered by a blindfold – HWAN WOONG raised temperatures with an alluring performance driven by intense star quality that was unapologetically himself: hypnotic, confident, and exceptionally deserving of more praise beyond the venue walls. Bringing the solo stages to a close, KEON HEE approached the stage with warm, tender vocals and a poised performance style, resetting the mood with “I Just Want Love” and its gentle, old-school smooth R&B sound.

The members then reunited – still dressed in their solo outfits – for the heartfelt “LOVE ME or LOSER,” without interruption. “Really, there’s no better artist than us, right?” beamed HWAN WOONG – a statement no TOMOON could disagree with – prompting a wave of cheers and encouragement that flowed seamlessly into “Life is Beautiful,” steering the show down a path enriched with positivity and joy.

Shortly after, ONEUS became SAJA BOYS, gifting TOMOON the addictively sweet “Soda Pop,” a performance full of charm and temptation that gradually lured the show into darker, more powerful territory, revealing a different side of the group, as XION and KEON HEE explained. The beautifully haunting “IKUK” opened this section with its dark-pop influences and gothic production, followed by the enthralling “Intro: Who Got the Joker?,” both shrouding the venue in mystery and ethereal tension. “No Diggity” followed, cementing itself with intensity and power that not even a sudden bout of technical issues could derail.

Already captivated by ONEUS’s stage presence, TOMOON were now fully under the group’s spell as ONEUS delivered a special performance of “Your Idol,” dressed in traditional Korean clothing reminiscent of the SAJA BOYS in K-pop Demon Hunters. This led into the group’s final staging, gloriously steeped in Korean tradition through their outfits, use of props, and unique instrumental arrangements for “LUNA,” “Same Scent,” and “LIT,” which closed the main set with pride.

The warm melodies of “Fly to You” ushered in the encore, playing over a VCR montage of behind-the-scenes moments that evoked both happiness and bittersweet emotion as SEO HO made an appearance – his temporary absence deeply felt but never forgotten. ONEUS returned in casual attire, sporting official tour T-shirts and hoodies, leaving no room for sadness as they kicked off the encore on a high with a festive version of “BBUSYEO,” before expressing their gratitude and offering a short rendition of Oasis’s “Wonderwall” from HWAN WOONG. “Show me your rock spirit,” instructed KEON HEE, leading into a compelling rock version of their debut single “Valkyrie,” followed by the wild party energy of “Shut Up 받고 Crazy Hot!” Here, HWAN WOONG stole the show as he mingled with fans seated in the balcony, delivering unforgettable fan service rarely – if ever – seen at a K-pop concert.

But H_OUR, US wasn’t just a concert. It was an unofficial fan meeting, powered by a genuine connection between artist and fan, with ONEUS’s sincere appreciation for TOMOON evident throughout the night. Closing with a second, more relaxed rendition of “BLACK MIRROR,” it was clear that neither ONEUS nor TOMOON wanted the evening to end.

ONEUS set a high bar for K-Pop concerts, creating a one-of-a-kind experience that was magical, immersive, and difficult to leave behind. The performances and fan interactions never felt rehearsed for the sake of being a concert. Instead, each one felt immersed with sincerity and authenticity that made the night that extra special and memorable, leaving TOMOON with eager anticipation for what may come in the future. This was ONEUS and H_OUR, US definitely made sure no one could ever forget that.