Test them out

Ren still had some time before Ann arrived, and he wanted to have some fun with the three he had here.

He woke them up.

"What are you up to, Amamiya?" Makoto asked. She suspected something but couldn't quite place it.

Ren simply grinned. "Sumire, forget what your ass is, Kawakami, forget what your tits are, and Makoto, forget what your ass and tits are."

The girls' eyes rolled back in their heads as the trigger took hold.