A relative of Satou who had taken full custody of her after her parents died many years ago. Despite her happy and cheery nature, she is deeply insane and has a very warped perception of "love" in which she accepts all forms of desires towards her with disturbing masochistic pleasure. Her deeply twisted views of love are held responsible for making Satō think in a similar way and making her into the deranged psychopath that she is today.
