Impmon shoves the dildo against Renamon's tight asshole. No matter though how he tried he just couldn't get it in - well not without surely waking her up and causing her pain.
As sat there for a moment pondering what to do when he had a sudden and naughty idea. He sat the dildo next to himself while he leaned in close to Renamon's shapely moonhalves. He gently groped them, revelling in her furred rear before pulling her cheeks apart and letting his hot breath was over her tight seal. He snickered before he lowered himself between those finely sculpted curves and kissed her pucker once right before he gave her ass a wet lick coating her rear entrance with his warm saliva. Intrigued by the taste he returns for more drawing circles at her ring of muscles and even pushes the tip of his tongue in between them,making sure she's loosened up a bit and also nice and wet.
Renamon in the meantime occasionally moans and murmurs, pushing her rump against his face, obviously enjoying herself.
Impmon grinned having finished preparing .

"Hehe, that's it relax foxy and enjoy - you're in for a BEEG surprise!"

With that Impmon grabbed the dildo and pushed against her tailrose which this time gave way to the toy and spread around it engulfing the large plastic cock much to Impmons delight.
But then there was a sudden loud moan coming from Renamon!