Tsuki

Tsuki is a Japanese singer, dancer, and model based in South Korea, best known as the main dancer and sub-vocalist of the K-pop girl group Billlie. Born Fukutomi Tsuki, she debuted with the group in November 2021 under Mystic Story and has since become a recognizable face in the industry thanks to her expressive performance style and bunny-like charm. Beyond group activities, she has carved out a solo presence as an MC on shows like Show Champion and Workdol, and as a host on her own Japanese radio program Tsuki ENT.VIEW. Her appearances on Netflix's zombie survival series Zombieverse showed a different side of her personality, earning her fans outside the K-pop sphere. Tsuki is known for her bright energy on stage and her warm, playful interactions with fans, who call themselves Tarutaru. [edit]

Tsuki grew up in Yodogawa-ku, Osaka, where she attended Renaissance Osaka High School. She showed an early passion for dance, especially Korean choreography, and took her first steps toward an entertainment career by auditioning for JYP Entertainment at age 15. She later trained under SM Entertainment, where she went by the trainee name Ravi and became close friends with aespa's Ningning and former SM Rookies member Koeun. To support herself during training, she worked part-time at Shake Shack in Japan.

In 2019, she joined Mystic Story and entered the third season of the Japanese survival show Popteen Cover Girl War alongside fellow future Billlie member Kim Siyoon. The exposure led to her becoming a regular model for Popteen magazine starting in November 2019. On February 19, 2020, she was introduced as part of Mystic Rookies, the company's pre-debut team. Later that year, under the stage name TARU, she debuted in the Japanese sub-unit MAGICOUR of the group 7+ME LINK with the single "MAGIC" on November 25, 2020, but graduated just one month later in December. These early experiences shaped her into the polished performer she is today. [edit]

Tsuki made her official debut as a member of Billlie on November 10, 2021, with the EP The Billage of Perception: Chapter One. The group quickly built a discography of EPs and singles throughout 2022, growing a dedicated fanbase. In 2023, Tsuki stepped into solo spotlight: on February 8, she became an MC on MBC's Show Champion alongside Moon Sua and WOOAH's Nana, a role she held until November 15. That March, she launched her own Japanese radio show Tsuki ENT.VIEW, which began airing on April 8. She also appeared in the Netflix semi-reality series Zombieverse in August 2023, returning for its second season Zombieverse: New Blood in November 2024. In May 2025, she took over as MC of Workdol season 4, replacing NMIXX's Oh Haewon. Most recently, Billlie released their first studio album The Collective Soul and Unconscious: Chapter Two on May 6, 2026, preceded by the pre-release single "Cloud Palace (False Awakening)" in January. [edit]

Tsuki is known for her cute, bunny-like visuals and bright, cheerful personality. Fans and media often call her the "moon bunny" of Billlie. She is praised for her expressive facial expressions and eye-catching moments during performances, which fans call "chik-kem." Her personal fandom, Tarutaru, is known for its dedicated support. On social media, she maintains a playful and warm tone, frequently posting selfies and behind-the-scenes content on Instagram and X. Her background as a former SM trainee and her survival show experience add depth to her image as a hardworking idol who earned her place. [edit]

Tsuki has cultivated a distinct sub-community within the broader Billlie fandom, known affectionately as "bunnies" to distinguish her from the group's official "Moonboos." This designation stems directly from her bunny persona and social media handle @bunny9tsuki, creating a specific ritual where fans identify as crows for the group but bunnies when supporting her. The community is highly organized, coordinating streaming campaigns for her variety show appearances and organizing subway ad campaigns alongside birthday billboards that leverage her status as the group's most recognizable face internationally. Her role as an MC on shows like Show Champion and Workdol further bridges the gap between the group and the audience, with fans frequently engaging in charitable drives in her name that highlight her connection to animal welfare. A defining moment in her cultural mythology involves a fancam of exaggerated facial expressions during dance breaks that went viral globally, transforming her image from a foreign idol into a relatable mood-maker. More recently, her participation in the Médoc Marathon in December 2025, where she ran in a squid cosplay with a heart rate of 196 bpm, added a layer of emotional depth to her legend. Despite these high-profile moments and a significant following across Instagram and X, Tsuki does not currently hold a placement in the published rankings according to iFANN data; the Global Fame Engine evaluated this profile in August 2026 and determined that there is no documented formal name for her fanbase.[edit]

Born Fukutomi Tsuki, she represents herself with a rabbit emoji 🐰 and the color red while her logo features a moon. Fans know her by the nickname Taru-chan, though her personal fandom name is Tarutaru. Before her debut in November 2021 under Mystic Story, she worked at Shake Shack in Japan and was a former SM Entertainment trainee known as Ravi. She and Haruna form the Japanese line of Billlie. Her foot size measures 245 mm, and her motto is "Don't try to do better than others. Let's try to do better today." She once expressed a desire to live like Moon Sua for a day because she admires her rapping. Beyond standard trivia, a story fans still retell involves her viral fancam where she made goofy faces during dance breaks, cementing her reputation as the group's mood-maker. Another legendary event occurred in December 2025 when she completed the Médoc Marathon in a squid costume, running with extreme physical exertion that showcased her dedication. In August 2026, a public transformation saw her shift from a bubbly persona to a cool city beauty, a change widely discussed by fans as proof of her versatility.[edit]

Tsuki has not publicly shared details about her parents or siblings. She was born and raised in Osaka, Japan. She lives with her Billlie members in a dorm in Seoul. She has not mentioned any pets. Her family has been supportive of her career, but she keeps that part of her life private. [edit]

Tsuki has close friendships with several fellow idols. She trained with aespa's Ningning and former SM Rookies member Koeun at SM Entertainment. Within Billlie, she works closely with Moon Sua, who co-hosted Show Champion with her, and Siyoon, who participated in Popteen Cover Girl War alongside her. She also co-hosted Show Champion with WOOAH's Nana. [edit]

Tsuki has no publicly confirmed romantic relationships. As a K-pop idol, she has not been linked to anyone by credible sources. As of 2026, she is single and focused on her career. [edit]

iFANN currently estimates Tsuki's net worth in 2026 at $500 Thousand. As a K-pop idol under Mystic Story, her primary income comes from Billlie's album sales, streaming revenue, concert tours, and fan meetings. Her individual activities supplement that: MC roles on Show Champion and Workdol, hosting her radio show Tsuki ENT.VIEW, and appearances on Netflix's Zombieverse. She also earned from her time as a model for Popteen magazine. K-pop idol earnings are typically split among group members after company deductions, so individual figures are estimates. Her net worth has grown steadily since her debut in 2021, with increasing solo opportunities boosting her income.[edit]