She finishes

Futaba kept pumping her fingers in and out of her own clit as her animals kept wandering around the apartment. All except Naoto, of course, who was still spent on the floor.

Futaba realized, though, that between the pounding she'd given Naoto and the assault she was giving her own pussy, she'd pass out. She wasn't used to spending that much energy.

"Deep deep sleep!" she called, just as she orgasmed, sending her four playthings deep into trance.

Futaba practically sank into the couch as she fell unconscious, her four slaves standing mindlessly being the last sight she saw as she passed out.