Ayumi Kiryu joined Kinuta Font Factory in 2011 after she graduated from the College of Art of Nihon University. She was involved in the development Yamamotoan, based on hand-written characters; Kinuta Shin, a typeface with very thin strokes; and Ugo, a variable Japanese font. In 2016, she released Kiriko, a kana font designed to be in-between letter form and graphic shape. In 2021, she released the color font Kinuta Kiriko Color. In that same year, she formed MoolongType and released a kana font named Moolong Tokatsuki, along with a color font version.