“Sumi Yoshizawa is a cheerful, elegant and friendly person with a seemingly perfect life, as she received a Shujin scholarship and was (supposedly) nearly uncontested in gymnastic competitions. She also appears to be quite clumsy and careless, as she is shown outright missing the mark at the batting cages even if her reflexes are usually excellent, and she lets her phone's battery run out while texting the protagonist. Despite her supposedly cheerful and bold personality, she sometimes experiences bouts of depression for no apparent reason; usually if the protagonist meets with her, she will end up with a gloomy mood for the slightest of mistakes, regardless if said mistakes are real or perceived. When practicing gymnastics, she also often feels like her body isn't hers and she cannot execute complicated moves properly despite knowing how to perform them.” - Persona 5 Wiki

Voice Example

https://www.youtube.com/watch?v=xI5mWSv9sSE