Iwano Tsuyuko

Despite being in her late thirties, looks nothing like her age. Though both her parents were pure-blooded Russians, she was born and raised in Japan, doesn’t speak Russian, and has no Russian name. Dislikes her own name.
Both her parents and husband have passed away. She still loves her late husband deeply, and her son is their biological child. Vaguely aware that she has a fairly strong sex drive.