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Zenitsu gasped, gagged really, as the demon’s dick distended his stomach again. Who knew a demon would have any interest in a human for purposes other than eating? Zenitsu sure didn’t.
The demon moved again lavishing its tongue on Zenitsu’s neck, he shivered in raw fear and disgust. Trying to again to futilely reach for his sword, he stretched the arm that wasn’t caught up in his haori.
The demon shifted, dragging Zenitsu in by his hips to settle his body more solidly underneath itself. With a more comfortable angle, it started to thrust in earnest. Much to the terror of Zenitsu; his tears freely flowing now (more so than usual) and each thrust accompanied by a hiccup.
“S-s-s-stoooooop! No more!” He cried but the demon did not pause or even shift to acknowledge that it heard him.
Zenitsu opened his mouth to try again but the demon gave a particularly hard thrust and all that escaped his mouth was a sharp squeal. His sword too far away, separated from Inosuke, Tanjiro and Nezuko, it was even a miracle he was still alive. But probably not for long. He felt the demon speed up its thrusts and intensity, a sure sign of its climax. Afterwards, there is no question that it will finally eat him.
At a loss of what to do, Zenitsu feels the panic settle in. The pain and exhaustion of trying to fight off this demon and losing, sinks into his bones. Bile rises up his throat and his vision becomes dizzy, but he still hasn’t thought out a way to save himself yet! The last thing he feels before the darkness overwhelms him, is the demon flooding his insides with cum.
~~~~~~~~~~~~~
Zenitsu wakes, dirty and sore but no demon in sight. He can hear Tanjiro calling for him a little ways away. Quickly cleaning himself up the best he can, he runs in the direction of Tanjiro’s voice and absently wonders who saved him from the demon.