Sunmi and Cha Hyun-seung steal the show at Waterbomb Seoul

While 'Waterbomb Seoul 2026' continues to make headlines daily due to BIBI's provocative performances, the reunion between Sunmi and Cha Hyun-seung is gaining renewed attention as the most memorable moment of the festival. While the intense performances captured eyes, the stage shared by the two moved the audience with deep emotion.

The most talked-about figure at this year's Waterbomb was undoubtedly BIBI.

BIBI showcased her unrivaled stage presence by performing hits such as 'Bam Yang Gang' and 'Bad X'. Her performance, in which she stripped off a jumpsuit to reveal a bikini, instantly flooded the internet, sparking a heated debate between praise calling it a "stage worthy of Waterbomb" and criticism labeling it "excessive staging."

However, after the performances ended, another scene began to receive an explosive surge of interest on SNS and online communities.

It was the reunion of Sunmi and dancer Cha Hyun-seung, who returned to the stage in good health after overcoming leukemia.

On the 27th, Sunmi released a video of her time with Cha Hyun-seung via her SNS.

The video captured Sunmi smiling brightly while affectionately stroking Cha's hair after finishing their performance. The two chatted naturally even after the show ended, revealing an unchanging friendship. The warm atmosphere, unique to long-time colleagues, moved the hearts of viewers.

Waterbomb's official SNS also highlighted the reunion.

The organizers released a video of the duo performing with the caption, "This is it! They met again!" The perfect chemistry shown by Sunmi and Cha on the KINTEX stage in Goyang, Gyeonggi-do, drew thunderous cheers from the live audience.

The connection between the two goes back a long time.

Cha left a strong impression on the public as the main dancer for Sunmi's representative song '24 Hours Is Not Enough.' That stage garnered significant attention for the intense chemistry between the singer and the dancer, leading Cha to rise to the status of a star dancer under the nickname 'Sunmi's Dancer.'

This reunion feels even more special because Cha has returned to the stage after a long battle with illness.

He suspended all activities after being diagnosed with leukemia last year and underwent long-term chemotherapy.

However, last December, he brought hope to fans by personally sharing the news: "They said I am fully recovered."

At the time, he shared his sincere feelings, receiving widespread support: "The battle with illness that felt like it would never end has finally ended. While undergoing chemotherapy, I realized that the pain was ultimately a process that allowed me to live. I started to laugh, and as I laughed, the fear gradually disappeared."

Seeing him stand on the same stage as Sunmi again after regaining his health was perceived as a cinematic moment, transcending a simple performance.

Netizens offered enthusiastic applause, commenting, "The Sunmi and Cha Hyun-seung combination is the best even as time passes," "I was moved just seeing him return healthy," "I could feel their friendship in the scene where she strokes his hair," and "This stage was the best scene of this year's Waterbomb."

While some stages captured attention with intense energy, the reunion of Cha and Sunmi was a moving moment to be remembered for a long time, blending a triumphant comeback with long-standing camaraderie.