Emu is a first year student at Miyamasuzaka Girls Academy. She's part of the musical show unit Wonderlands x Showtime. One day, Emu met Tenma Tsukasa who works at the Phoenix Wonderland Stage. Emu wants to restore the stage to its former glory.

With a cheerful but naive personality, Emu is impulsive, acting on every idea that she comes up with, with a tendency to drag people around her into her plans. Emu has established her own personal catchphrase, "Wonderhoi!", which she seems to use as a way to motivate herself. When she's with others, she encourages and sometimes pushes them to shout it alongside her, possibly for the purpose of trying to motivate them with it. 

Emu has three older siblings, two brothers and a sister. When in her brothers' prescence she seems to tone down her upbeat personality, becoming much calmer, likely an effect of her brothers' discouragement of her loud way of self-expression. She has seemingly given up on defending her feelings to her brothers as they barely listen to her. Although she tries her best to remain positive, her brothers' cruel and relentless criticism does effect her and her self-esteem quite severely. It's also shown that Emu does seem to be quite sensitive to rejection and disapproval, even when indirect, which may well be another outcome of this criticism. 

Emu also seems to have somewhat of a keen intuition when it comes to the sincerity of someone's smile, though she doesn't seem to be fully aware of it. This is shown in her first encounter with Asahina Mafuyu, whom she meets through the Sports Festival. Upon meeting, Emu is quick to become terrified of Mafuyu when she realises her smile does not seem to be genuine, noting that: "She's smiling... but I-I wonder why it doesn't look like she is actually smiling..."

She is shown to have great admiration for her grandpa.

Emu is a high ranged voice with lots and lots of energy