The word Kobushi (こぶし) from the group name comes from the Japanese magnolia flower (named 辛夷 kobushi). In the language of flowers, it represents friendship, trust and welcome. The word kobushi written differently (拳) can also mean a fist, so the name has a double meaning: refined like a magnolia, but with the strength of a clenched fist.
Kobushi Factory has 8 current members.
Hirose Ayaka has been leader since March 8, 2015.