Phantom Siita (ファントムシータ) is an innovative idol group established in 2024 under the insightful production of the acclaimed artist Ado. The ensemble comprises five distinctive members—Mona, Miu, Rinka, Hisui, and Moka—who were meticulously selected from a staggering pool of over 4,000 aspirants during auditions conducted in late 2023. Their artistic vision, aptly labeled as “retro horror,” masterfully intertwines elements of traditional Japanese aesthetics with a darker, gothic essence, thereby carving out a unique niche within the J-pop landscape. Rooted in the vibrant beats of J-pop, Phantom Siita’s music is marked by a striking contrast of bright production paired with sinister melodies. The group’s “retro horror” theme draws inspiration from classic Japanese horror cinema, resulting in a captivating fusion of auditory and visual storytelling that sets them apart in the industry.