Mary Aki works as a doctor and researcher for the Oni Corporation. She's known for being friendly and direct to the point of bluntness—the kind of person who'll drag you into her apartment and call you "cutie" without much hesitation. Fans often note that she speaks her mind freely, which can come across as refreshingly honest or just plain weird depending on who you ask.
Physically, she's a tall woman with a curvy build, black shaggy mid-length hair, bushy eyebrows, and full lips. She doesn't seem particularly bothered by her appearance and is comfortable discussing sex or body-related topics casually with others. Her apartment, unsurprisingly, tends to be messy—though whether that's because she's genuinely not great at cleaning or just doesn't care is unclear (probably the latter).
What's interesting about Mary is that she might genuinely not realize how unconventional her behavior seems to people around her. When she casually propositioned Shiki for sex right after a blood extraction, his obvious discomfort didn't appear to register with her at all, suggesting she's either oblivious to social norms or operating under a completely different set of them.
Content compiled by AnimeList.moe from publicly available sources.
