Grab her hips and slam her down.

The faster they went, the closer both got to their own peak... and it was at one such moment that Ryu realized.
Will Nia jump off him at the last moment? Will she ride this out to the very end? Will...

There could be so many possibilities, but being as pent up as he was he wished to make this copulation worth it.
He wished to go till the very end, and experience the very best sex could offer a man.
After all who knew when he'd get to fuck those beauties again? It sure didn't look like they'll let him in their pussies on a daily basis, not any time soon at least.

Therefore he wished to get the best he could out Nia, right here, right now.
And what could topple a creampie as the best type of ejaculation?

Many words were used to describe such deduction, but no such complexities were needed for Ryu.
He was horny. He didn't wish an half-assed end to such great sex. Therefore, he instinctively acted to assure he'd get the best out of this.

Namely, when he was about to cum he directly grabbed Nia's bouncing hips as they were going up, and slammed them down with all his ****.

Then, he simply let loose.

The stream of cum erupting out his cock and flooding her womb made sure the elf would follow along and cum her head out too, the couple clinging to each other while Ryu drained his balls into her deepest.
How long did they stay like that, stuck to each other?

Maybe a second, maybe an eternity, but fact was that once Ryu was about to push Nia down and start round 2...