Handcuff them and ream them from behind

Karin and Tier grab Yuzu and Mila respectively, using some handcuffs from Chizuru to cuff them behid the back before slamming them onto a counter (wished up by their mistress) And then confiscate the strap-ons. "This is what you get for breaking the law!" Tier shouts, slapping Mila on the ass as she plows into her, Karin doing the same to her sister. Both of them moan in sudden trapped pleasure while Chizuru has Isane move from a back massage to a clit massage, helping her get off at the sight.