NiziU’s RIKU and Hearts2Hearts’ CARMEN Team Up for the “らぶえもチャレンジ

PopAxis 8/18/2026


On August 18, 2026, NiziU’s official X account posted a short video of member RIKU performing the “らぶえもチャレンジ” (Love Emo Challenge) alongside CARMEN of the SM Entertainment group Hearts2Hearts. The clip, roughly 15 seconds long, shows the two idols executing the signature cute choreography from NiziU’s 2025 track “♡Emotion” (Love Emotion / New Emotion) in coordinated pastel outfits, ending with a shared heart gesture. The video was simultaneously shared on TikTok, Instagram Reels, and YouTube Shorts, with NiziU tagging Hearts2Hearts and highlighting RIKU.



“♡Emotion,” released in October 2025 as the title track of NiziU’s third studio album *New Emotion*, is a bright, synth-driven song about modern romance conducted through social media. Its playful choreography has inspired an ongoing challenge series in which NiziU members regularly invite other artists—ranging from Japanese idols and actors to K-pop seniors—to join them. Previous collaborators have included Lee Know of Stray Kids, members of NEXZ, ILLIT’s Iroha, and various Japanese entertainers. This latest pairing marks a notable cross-agency and cross-national moment: Japanese JYP/Sony act NiziU meeting Indonesian SM rookie CARMEN.


CARMEN (Nyoman Ayu Carmenita), born in Denpasar, Bali, in 2006, debuted with Hearts2Hearts in February 2025. She is the first Indonesian idol under SM Entertainment and has quickly become known for her bright energy, multilingual ability, and “sunshine” persona within the group.


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**A Sweet, Border-Crossing Moment That Feels Bigger Than a Dance Challenge**


There is something quietly delightful about watching RIKU and CARMEN dance side by side. One is a seasoned Japanese lead vocalist who has grown up in the public eye since the *Nizi Project* days; the other is a relatively new face from Bali who carried the weight of being SM’s first Indonesian debutant. Yet in the short clip they move with the same light-footed precision and the same easy smiles, as if the distance between Kyoto and Denpasar, or between JYP and SM, simply does not exist for those fifteen seconds.


Dance challenges have become one of the most effective soft-power tools in the current idol industry. They require almost no formal collaboration contract, no joint stage, and no press conference—just a shared audio track, a few camera-ready outfits, and the willingness to look a little silly together. When they work, they create the illusion of friendship and mutual respect that fans crave. This particular challenge has already proven its staying power: NiziU has used “らぶえも” as an open invitation for months, and artists keep answering. Adding CARMEN to that list feels especially meaningful. Hearts2Hearts is still a young group, and CARMEN’s participation signals that the challenge has reached beyond the usual Japanese and Korean circles into the wider Southeast Asian fanbase that both acts share.


What stands out most is the visual and emotional harmony. RIKU’s long, wavy black hair and soft pink gingham top contrast gently with CARMEN’s neat braid and denim camisole, yet their expressions mirror each other—bright eyes, playful pout, the final heart formed with overlapping hands. There is no forced cuteness, no awkwardness of two people meeting for the first time under the pressure of content creation. They look like they are simply having fun. That authenticity is rare and valuable.


In an industry that still draws clear lines between agencies, nationalities, and generations, these small crossovers matter. They remind fans that idols are not locked inside their company silos. A Japanese group that debuted through a global audition project and an Indonesian member of an SM group can meet in the middle of a Japanese song about digital-age romance and make something that feels universal. The comments already reflect that warmth: fans from both sides celebrating the pairing, noting how natural the chemistry looks, and expressing hope for more interactions in the future.


Of course, a fifteen-second challenge will not rewrite industry politics or create permanent alliances. It is still promotional content at its core. Yet the best promotional content is the kind that does not feel like promotion—the kind that lets two young women from different worlds stand in the same frame, dance the same steps, and leave viewers with a simple, lasting impression of joy. RIKU and CARMEN managed exactly that. In a crowded, often competitive landscape, that small shared moment of pure “love emotion” is worth celebrating.

PopAxis

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