(First WWYD and first time on this amazing site) You are the youngest of three brothers. Your father had passed a couple years ago and your mother had been away with a group of adventurers for some time.
Recently, your town had been taken over by mamono and the residents, including you and your two brothers, were forced to house these mamono. The ones that are with you are three manticores, and they've spent the last few weeks raping you as they pleased.
One day, one of your brothers remembers that your mother had kept sex toys in the attic as she had been a dominatrix at some point in her life. Your brother suggests that you all load them into a crate and remove them from the house to dump in a nearby lake, your other brother agrees. The two brothers head upstairs to the attic and have you go downstairs to keep watch on the three manticores.
However, as you make your way downstairs, you hear a familiar voice. As you get closer to the bottom of the stairs, you see the three manticores there all talking and laughing with a fourth, but taller manticore wearing a jacket. You see that glistening blue hair and almost immediately you recognize her as your mother. She spots you and her face beams with happiness.
"(Your name)!?" your mother says as she walks up to you and embraces you. After that you talk with her and the other manticores reminding yourself that you need to keep them occupied, but at one point she asks, "So where are your brothers, why aren't they down here?"
Then her face switches to one of surprise, then when she looks at you, it melts to one of seductiveness and she asks, "They're not clearing out the attic are they?"
She stands up and proceeds to remove her jacket, revealing a jet black corset and fishnet stockings underneath.
She leans into your ear and whispers, "Cause if they are, and you're helping them, I won't hesitate to use my toys on you, and I'll allow my new friends here to use them on you too."
She takes out her whip and the other three manticores each give you lustful looks. WWYD?