A tentacle up her pussy, of course!

You decided to go with what you considered a classic, and shove one of your tentacles up into the umi-nyobo's pussy! You moan into the monster's mouth as your tentacle writhes and squirms within her, completely dominating her tongue as you aggressively frenched her.

You drowned out the noise of the elves **** your newest prey's lackey, uncaring of their ****. You did only go after the two because you wanted their help in **** the dryad after all. But if they broke her in with their little orgy, then good on them!

You continue your tentacle play, trying your best to make the umi-nyobo cum over and over again, and judging by how much of her juices you could feel on your already slimy tentacle, and the periodic clenching that came with her orgasms, you knew you were doing a great job!

Soon enough however, the Umi-nyobo passes out, and you drop her onto the cavern floor. Somewhat gently, so as to keep her from being injured and unable to properly fuck of course. You would have to fix her stamina... Can't have her passing out on you when she's gonna be a hot commodity until the elves get over their feud with her.