[I think it's unnatural without dialogues, so from here on I put extra effort in writing. For the dialogues]
The bottle slowed and stopped with its neck pointing at Kyoko.
"Dare," Kyoko said.
Ayumi sat up straighter. Her naked thighs shifted on the carpet, and her dark curls brushed her shoulders. Her eyes burned. "Kyoko sucks Ryuki until he cums, and you have to hold it in your mouth," she said. Her words landed heavy, and a flush crept up her neck as she spoke them.
Mika let out a sharp laugh from her spot behind Ryuki. Her pert breasts bounced slightly, "Oh, shit, you're not messing around now, Ayumi," she said "This is getting real."