In 2006, she and singer Nagi Yanagi formed the unit Binaria; to date, they have released 13 albums.
Annabel released her second single "Above Your Hand" on May 23, 2012, which is used as the ending theme for the anime television series Sankarea.
Her third single, "Signal Graph," was released on July 25, 2012, which is used as the opening theme for the anime television series Love, Elections & Chocolate.
Her sixth single "Small Worldrop" was released on April 24, 2013, used as the opening theme for anime Red Data Girl.
The seventh single, "Alternative", by Annabel was released on August 7, 2013, was used as the ending theme for the reboot of the anime Rozen Maiden.