Satou's aunt is the major antagonist of the story despite not having her actual name revealed, for reasons unknown, inflicting painful and bitter memories in her niece's experiences with the term love. She tends to be very cheerful yet insane at the same time. Her kind and sometimes innocent words leave the impression that she's somewhat unhinged. With her seductive and crazed demeanor, she is known to attract violence and sexual interactions to herself. 

This is a recast, so please try to be as close to the reference voice in the video as possible.