Incubus Choromatsu who is a total failure as a sex demon. Bro can't enchant anyone. He's thin, weak and ugly, and also his dick is tiny. He has virtually no energy or magic because he hasn't managed to fuck a single person EVER, which, in turn, keeps him from successfully seducing anyone. It's just a vile, unfair loop of disappointment that he calls life.
And then. He happens to meet Osomatsu. Who for this scenario is not technically his brother but they can become brothers. If we think about it hard enough.
He's utterly unsuccessful to seduce him, Oso is indifferent at best and offended at worst. But he ultimately decides to humor him and keep him around for entertainment (he's actually just feeling the mystic brotherly link that brought them together).
They begin to hang out with the promise that maybe, one day, when he's desperate enough, Oso will let him fuck him. They both get some very needed company in the meantime, bonding over being ugly and the fact that nobody wants them and whatnot.
The two actually develop a somewhat healthy relationship. But, after a few weeks, Choro started to have these little episodes where he gets on his hands and knees and begs Osomatsu to let him hit. It's his nature, he can't help it, he's starving, and when the craving hits, it doesn't go away for a while. He's too weak to force himself upon him, so begging and whining like a dog it is.
To his very own surprise, Oso wasn't immediately disgusted by it. Over time, he began to tease him. To, quite literally, poke the bear. He'd shove his crotch in Choro's face and let him sniff all he wants, but don't let him touch. Or grab and pull at his insanely sensitive tail. Or just stay in the room and watch with a smile how Choro brutalizes his own cock over him.
For once, someone is feeling sexual desire for this pathetic little sex demon. It's actually happening, and it fuels him. It changes him.
Before Oso notices, Choro goes from a tiny little wimp to. Well, he's still somewhat of a twink, but that dick is definitely a bit bigger than he remembered it...
This all concludes with Choro being ultimately unable to hold up their promise (waiting for Oso's permission), so he just completely demolishes Oso's pussy while he sleeps. Well, he couldn't really get much sleep that night. Or any other night after that.
