Mamono: Also known as monster girls, these beings, often magical, roam the world. They come in dozens of shapes and sizes, some are intelligent, some are literally animated stationary objects. All of them have one common trait; the need to obtain energy through sex with humans. The original descriptions specify sex with males only, but for obvious reasons I'm binning that.
It's taken me awhile to get to this property despite knowing about it for awhile for the same reason it took me so long to write a proper pokegirls and buko story. I'm not however gonna attempt to write a monster boy story alongside the monster girls one, because I learned my lesson from how long it took with pokegirls and buko.
Carver, a heavy knight, walked into town. It had been a long day for him, or at least a long travel. He went looking for the inn so he could rest, but when he found it, saw it covered it damage, marks in the wood and chunks ripped from the roof, the windows boarded up. Curious, Carver entered the inn and looked around at those inside.
The people inside looked like normal towns folk, though many were injured. Those that weren't just seemed frightened to become those that had. The armor clad traveler turned to the innkeeper, "Have there been mamono attacking the town recently?" The innkeeper shook his head, "Just one, and not the town, just the inn." "What kind ? And why?" Carver asked.
"Gargoyle. She used to sit up on the roof and ward off other mamono from attack, she kept the place safe. Then some fool bandits came along and broke the seal on her statue. Now whenever night falls, she turns from stone to flesh and torments the inn, trying to get inside to fuck and attack anyone who she can get. We'd have evacuated the inn, but this is the only place a lot of these people have." The innkeeper explained.
Carver nodded, "I understand. How long do you think until nightfall?" "Another hour, maybe two." The innkeeper said. "Plenty of time to have my sword sharpened before she arrives again." Carver said, exiting the inn and looking for the forge. He wouldn't allow a monster girl on any kind to freely attack helpless towns people, he couldn't as a warrior allow it.
With his sword sharped and armor at the ready, he waited in front of the inn. He wouldn't use his heavy shield for this, as he would need his mobility. Soon after the sun went down, he heard her before seeing her. A feral laugher in the sky, then a winged silhouette in front of the moon. Heavy as his sword was, Carver was able to draw and strike at the gargoyle before she could strike him with her claws.
Even in her flesh form her skin was still grey as stone and only slightly less dense than it. Her hands and feet ended in claws, her mouth was full of fangs. These, along with her wings and tail, seemed her only inhuman features. She watched Carver carefully, lustfully, and pounced on him again. Her claws glanced off his armor and he struck her in the head with the handle of his sword.
With the gargoyle dazed, Carver was able to pin her down beneath him, using the weight of himself as well as his armor to keep him down. He would need to sate her in order to keep her calm long enough for the sun to return, and for occasions such as these, his armor was able to separate around the waist, letting him free his member and thrust into the gargoyle before she knew it was happening.
She didn't try to struggle, as sex had been her goal from the start, and she didn't see how getting it could be bad for her. Carver grunted as he slammed his solid eight inches into her pussy, not bothering with being gentle. The stone monster girl could more than take it, and anything less was likely to upset her more than anything. Her claws held onto his back, which could have caused enough bleeding to slowly kill if not for the armor.
Carver got rougher with each passing minute, forcing his entire length into the gargoyle harder and faster. The sounds of her lustful moans threatened to push him over the edge more than once, but he held out, keeping it in until the mamono had cum, crying out into the night. Even then he continued for another ten full minutes to push her over the edge again before allowing himself to cum, groaning as several spurts of warm seed filled her heated slit.
The gargoyle went limb beneath him, panting in satisfaction. When Carver was sure she was no longer conscious, he pulled out of her. After fixing his armor, Carver helped the innkeeper place the gargoyle back up on her pedestal. When the sun rose, she'd return to stone and the seal would keep her in place even at nights once again. The inn was safe.
"Thank you, how can we repay you?" The innkeeper asked. "Just a bed for the night and food for the road will suffice." Carver said, heading inside to rest.
Cassandra, a martial artist, was meditating in the mountains. She was well aware of the hidden mamono who'd been watching her, ogling her near naked and well muscled form for almost an hour now. She was starting to wonder if the monster girl planned on making her move at all, when she heard the movement coming towards her.
Cassandra jumped from her flat stone, avoiding the flying kick from the harpy easily. The bird girl was just a foot shorter than Cassandra, with sharp talons on her hands and feet, and feathers along her arms and legs, colored bright pinks and dark purples, matching her hair. The feathers of her arms extended out into large wings, and moved down to her chest. In truth, she was wearing even less than Cassandra, but the thickness of the feathers allowed for the illusion of being dressed.
"A monster girl here to prey on the weak I take it?" Cassandra questioned, shifting into a combative stance. "An accurate guess, though I see now you're no normal weak prey." The harpy said, continuing to eye Cassandra's form. She jumped from the flat stone, flying at Cassandra and slashing at her. Cassandra avoided the talons easily and sent a strong palm strike into the harpy's gut.
The harpy was knocked to the ground, but stopped Cassandra's follow up attack with her feet, kick slashing her back and getting to her feet again. The harpy jumped into the air, flapping her wings hard and sending a powerful current of wind down at Cassandra. The wind began to push her across the rocks, hurting her bare feet. She reached down, gripping the hard stone with her hands to keep from being blown away.
"If I had my bo staff with me, this battle would be over already." Cassandra called. "Perhaps it would, perhaps not," The harpy chirped, flapping her wings harder, "But ifs are worthless here." The force of the wind knocked her off of rock and sent her flying back. The harpy flew down, following her own current and slamming hard into Cassandra, pinning her to the ground.
"It seems I've won~" The harpy said, using her talons to cut off the thin fabric covering Cassandra's breasts and pussy, leaving her naked. Cassandra's legs reached up and locked around the harpy's neck, pulling her body down and letting Cassandra palm strike her again, sending her flying into a boulder, where a shoulder shot to the gut knocked the wind out of her.
"Too easily distracted even when so close to victory." Cassandra teased. The harpy pouted, "okay, okay, you win this one." "So it seems, so now I claim my prize~" The martial artist purred to her long time sparring partner, pulling her down onto her back and holding her legs open as she buried her tongue inside of the monster girl's pussy.
The harpy moaned as she felt Cassandra's tongue probe deep into her. She didn't win their matches often, but she had won a few, and enjoyed the right to dominate Cassandra to her heart's content. She was starting to feel that she almost preferred Cassandra's victories, as her friend had gotten remarkably skilled at pleasing her from so much practice.
Cassandra's tongue found the harpy's more sensitive weak spots easily and laid into them aggressively while her fingers toyed with her clit. The harpy felt herself get close fast, but whimpered when she felt Cassandra's movements slow to prevent her from actually getting off. It was always pleasure hell when Cassandra wanted to test how long she could keep the harpy right on the edge. She'd kept her there for over and hour last time, and the climax had blacked her out immediately.
It seemed that Cassandra was aiming to do the same thing this time, or perhaps even keep here there longer than before. "Think of it as incentive to train harder and beat me next time~" Cassandra purred before plunging her tongue back into the harpy's cunt to keep her sensitive body building up in pressure without paying it off. She loved watching her sparring partner squirm sometimes.