Fuck her against a rock.

Seeing a rock in the water, Kazuma grinned and pulled Aqua towards it. Seeing what he was going for, she swam along with him, before planting her back against it. He gripped her wrists, holding them up over her head, and pressed against her, plastering her boobs against his chest.

"Unh... You're being pretty forward Master..." Aqua moaned.

"Why shouldn't I? I own you sexually... Actually, I technically own you as a cheat item too," he teased.

"They still bent the rules so bad for that..." Aqua pouted. He chuckled and kissed her as he lined his dick up, before pressing into her pussy. "Mmmph!" she moaned into his kiss as he pushed in all the way to the hilt. He then began to slowly fuck her, pumping in and out of her as he maintained the kiss for a few seconds before breaking it.

"Wow, your pussy is really wet," he joked as he kept going.

"It's literally underwater Master," Aqua moaned, squirming in pleasure against him, her tail writhing against his legs.

"That's the joke," he smirked as he pounded into her, getting her gasping in pleasure. She tried to retort, but the pleasure he was giving her made it too hard to form words, so she just kept on gasping and moaning as her pussy continued to milk his cock. Soon, he felt himself throbbing, and grunted out a warning. Aqua screamed out in ecstasy as her body was wracked with orgasm, and Kazuma's seed filled her.

Panting as their pleasure subsided, Aqua remarked, "Okay, maybe the Erokami showing up wasn't the worst thing in the world..."

"Nope, no she wasn't."