Sae is intelligent, professional and serious, although her actual maturity is debatable. A workaholic, Sae is very strict in both her work as prosecutor and guardian for her younger sister, Makoto, constantly telling her to focus on her studies and such. With many responsibilities, Sae is always working due to Japan's work pressure, and is very stressed and exhausted. She must care for Makoto, almost putting her in a single mother's role. Because of her father's death, Sae views the concept of justice as meaningless. This has made her hyper-competitive and obsessed with getting ahead, to the point of telling Makoto that success is all that matters in life. This is to her detriment, as it clouds her judgement and leads to her trusting all of the wrong people; throughout the investigation of the Phantom Thieves, she remains completely unaware that her boss is taking her for a complete fool and while she doesn't get along with Goro Akechi, she nevertheless trusts his judgement regarding the Phantom Thieves. 

Sae's most consistent flaw is her hypocrisy. For all her supposed disgust of the Phantom Thieves, she's perfectly willing to resort to methods similar to theirs in order to catch them, claiming that they "can't be caught by following the rules." Akechi even points out to her that, in doing so, she is no different from the very people she claims to hate. This trait of hers is especially prominent in her Shadow, who repeatedly states that she wishes to do things "fair and square" despite constantly cheating. Regardless of her many flaws, Sae isn't without standards or moments of compassion, a prominent example being when the protagonist was feeling fatigued over the drug injections making her feel concerned for him despite him being labeled a criminal. There were even times when she would be worried the protagonist would pass out. She is also genuinely disgusted and even disturbed at the cops for inflicting such pain on the protagonist.  

Set to appear in:

- Dark Sun

- Stars and Ours

- A Magical Valentine's Day