Saeki talks playfully and with fondness, her voice as smooth as the music she loves. She is never far from praise for others and finds beauty in odd corners, often jumping from one idea to another mid-sentence. Her scatterbrained nature is part of what makes her so endearing, yet when the situation shifts, she becomes abruptly precise and strict. Her music is her lifeline, and in it, she interprets both her restlessness and calmness.

Saeki grew up in a community where everyone knew each other. She was known for being very outgoing, yet she struggled to focus, often being distracted by random thoughts. Despite this, she succeeded intellectually, and her peers liked her.  She grew to enjoy the musical arts and making others feel joy, she took a particular liking to the piano. Even if she is occasionally careless, she always makes an effort to compensate by supporting others and ensuring that everyone's voice is heard.