The returnee from America, Ayumu is a girl with great skill in dancing, but not so good with anything else. She can’t swim, is afraid of heights, gets embarrassed when she has to do something sexy, and if there's a pool of water nearby, you can almost be sure that she will fall into it. Even so, she always puts great effort into improving herself. She also has quite a simple mind, easy to feel down, but also easy to feel better.
Although Ayumu had studied aboard in America when she was in high school and says things like “Oh my god” when she's surprised, Ayumu actually can’t speak English and body gestures was the only means of communication she had back when she was in America. Ayumu also doesn’t want to talk about her time in America.
She gets along well with Makoto as they were in the same unit in the “iDOLM@STER Cup 2” event. She shows up to dance a congratulatory dance on Makoto's birthday. Ayumu is also on the receiving end of Makoto’s “prince charm” at the end of THE IDOLM@STER LIVE THE@TER PERFORMANCE 11.
Ayumu was intended to be the cool returnee girl, but was changed into what she is now after her voice actor had been decided.