Warning: Uh....Semi Rape/NonCon? It turns to consensual, but...yeah.

Jeff growled angrily and threw his sharpened knife into the ground, pacing around. He had lost his most recent victim and, as anyone could clearly tell, he was pissed off. This was the fifth time just this week.

"Every fucking time! Its the goddamn fucking forest I tell you!" he ranted to no one in particular. As he was ranting, yelling, and cursing he heard a loud branch snap behind him and he grabbed his knife, spinning on his heels to see who it was.

There was a tall, almost camouflaged figure behind him and he looked up to see he had no face. He smirked when he realized who it was.
Sure, he had never met him before...but he heard the tales and legends about him..Slenderman.

"So..." he said, crossing his arms, "you're Slenderman, huh? Gotta say, I'm a bit disappointed. I expected more. What'cha doin' creeping around a forest, old man? Lonely or something?" he taunted, laughing.

Slender stared at the boy. His face had felt as if he look unimpressed, one eyebrow cocked up. He said nothing, though, and picking him up with his tentacles. "Hey! What the fuck?! Let me go! Now!! Let me go or I'll make you go to sleep!" Jeff yelled, trying to break free.

The creature led a few of his tentacles to the edge of Jeff's hoodie, started to crawl up under his shirt and feel around.  A few slid to the front of his black jeans and started to rub, making Jeff jerk away. "Watch where that thing is going!" he yelled, "Are you listening to me?! Sto-!"

Jeff was cut off by Slenderman shoving a tentacle into his mouth to shut him up. He chuckled as the boy gagged and tried to speak around the tendril...after all, this was a win-win.
The younger coughed as the velvety tentacle came down his throat, spitting out the inky black substance.

Slender ignored any pleas or demands from Jeff, mobbing some tentacles into his boxers and stroking him slowly. Jeff jerked away again and whined, "S-Stop, no..."

Slenderman didn't listen, though, and stripped him down quickly. Jeff yelped and tried to hide himself, "Stop!" he cried, feeling something he hadn't felt in years.

Fear.

He had never been with someone and had no idea what it was going to be like. It was terrifying.
The creature only responded with a deep purr, a smaller tentacle pushing into him while another stroked him slowly. "Stop...p-please...I-I've never..." Jeff stuttered out, trying to ignore the pleasure.

"But, you don't really want me to stop, do you Jeff?" Slenderman asked, speaking for the first time since their encounter. "Deep down, you are really enjoying this...enjoying me taking complete advantage of you."

Jeff shook his head quickly and gasped and Slender filled him more. His body betrayed him as the tendrils thrusted into him and stroked him, making him moan softly. Slender growled and pulled his own pants down, sliding Jeff down his cock and forcing himself to stay gentle.

Jeff cried, feeling a sting of pain but also just pure want. He wanted Slenderman to just use him, fuck him, already. He wanted him to use him like nothing more than a toy.
Slender smirked, knowing what he wanted but giving him a minute to adjust. Jeff, of course, didn't want any of that.

"I-If you're gonna fuck me do it already, goddammit!" he yelled, cheeks turning bright red. Slenderman chuckled deeply, "Hm...as you wish." he said, before wrapping his hands around Jeff's hips and slamming him down on his cock.

Jeff cried out and clung to him, eyes rolling up and pleasure-filled tears pouring down his pale cheeks. "Oh god yes! Faster please!~" Jeff begged desperately, crying out for more.

He felt like he was going to pass out, the pleasure almost too much for him to handle. "You feel good, Jeff..." Slender purred, "so close already..."

Jeff couldn't even form a coherent sentence to warn Slendy he was cumming as him back arched up and he screamed in bliss. He came over the both of them, letting out small gasps as Slender thrusted a few more times and came into him.

They both stayed close, shaking and panted before Slender set him down. He chuckled, "How would you like to be my newest proxy, Jeff...?"