, is a Japanese idol girl group that formed in June 2024. They released their debut single, "Heirasshai! â Nippon de Aimashà  / Ubu to Zuru", in March 2025.
On May 23, 2023, Hello! Project announced that they would be forming a new girl group. Rosy Chronicle's final line-up and name were announced on June 16, 2024. Rosy Chronicle debuted on March 19, 2025, with the single "Heirasshai! â Nippon de Aimashà  / Ubu to Zuru". On July 23, they will release their second single "Natsu no Inazuma / Gao Gao Gao".