Sanbon Ribbon is a girly pop unit which consisting of 3 Harumi Sisters' members: Sawara Harumi, Kajika Harumi, and Shinjyu Harumi.
They've currently released 4 songs.
Background
This is a three-member girly pop unit formed by the members of Nanasuta Sisters; Sawara / Kajika / Shii-chan. It's the three Harumi Sisters who are always crazy like typhoons, but they bring out their girlish side to the fore of Sanbon Ribbon. The theme is "Always Somewhere in Heart, There Are Little Girls". The world that only girls can see might come into view through them.