Anything for a Dollar

Ryan had woken that morning feeling more tired than when he went to sleep. It had made the small wolf's already grueling day of college painful. He could barely pay attention in classes and it was noticed. By the end of the day he felt exhausted and just wanted to get home and watch some anime on the computer. Just to add to the already rubbish day it started to rain as soon as he got off the bus.
Unfortunately when he got home his  sister was already home. "Hi Ryan. You look tired."
Ryan just grunted in response.
Although Ryan was the older sibling he didn't look like it. He was very small for his age and was smaller and younger looking than Emma who was two years younger than him. His size was a problem all his life and while he had come to terms with being smaller than people his own age being smaller than his younger sister always annoyed him.
"Want to help me with my homework?" Emma asked ignoring his response.
"No." Ryan said as he walked past her to get to the kitchen. Homework was the last thing he wanted to think about, especially his sister's.
"I'll give you a dollar."
Ryan stopped in the doorway to the kitchen. He turned back to face Emma who was holding out an american dollar. It was useless since they lived in england but Ryan wanted it.
"O-ok." He answered, slightly confused at wanted the foreign money so much. I can always exchange it. He reasoned. Money is money. "What subject?"
"Maths. You're good at that right?"
"Yes." Ryan replied as moved to sit down by the coffee table. 
"Wait! Your clothes are dripping. You should get out of them."
"Yeah I'll be back in a minute then." Ryan started to head for the stairs but Emma grabbed his hand and pulled herself up.
"Let me help you." Emma tried to take Ryan's jacket off but he pulled away from her. "Stop squirming and let me sort you out! I'll give you another dollar." Emma took a second bill out of her pocket and Ryan just stopped resisting. She removed his jacket then his shirt. The rain had managed to right through to his fur. 
He hesitated when she started to undo his belt but didn't stop her. However when she tried to remove his briefs he grabbed her wrists.
Emma smiled at seeing the torn look on Ryan's face. "Don't you want the dollar?"
Ryan whined and after a moment he let her carry on. Quickly he was left standing in the middle of the living room with only his hands covering his crotch. "Can i get dressed now?" He had thought about just going but his sister still had the dollar. 
"No. Your fur is damp and i don't want to wait while you go and dry off. The heating is on, you'll be fine here." Emma disappeared into the kitchen to toss his clothes into the utility room then came back to the table and sat down on the couch. "You can do my homework now." She said before pulling out her phone and starting tapping away.
"You said help." Ryan protested.
Emma grinned at him and held out the two dollars bills. "As soon as my homework is done you can have these. I don't feel like doing it after undressing you like a fussy toddler."
Ryan blushed at the comparison but knelt down in front of Emma's homework and grabbed the pen. Maths is easy. I can have this done in no time. Then I'll be two dollars richer.
Behind him Emma was busy texting a friend from school.
"It works! He's sat naked in front of me doing my homework."
"Amazing. Now you have your own slave. Shame you couldn't have given him peanuts instead."
"Yeah. Maybe I'll commision the hypnotist to change it. It might end up cheaper than giving my brother a dollar every time."
"What will you do with him now?"
"I don't know yet. I'm not sure how far i can push him. The instructions say you need to ease the subject into it. I'm going to try something. Stay quiet, i think being watched might be too much."
Emma muted her phone before starting a video call with her friend and leaning it on the couch where it would have a view of her brother.
"Ryan?"
Ryan twisted around to look at his sister, his eyes first going to the dollars sat next to her. Seeing that Emma picked them up and held them out. "My feet hurt. You can leave the homework and I'll give you an extra dollar for a footrub."
Ryan smiled and and walked over, covering himself again. He tried to take the money but Emma held on. "I'm your sister. You don't have anything I haven't seen before."
Ryan blushed again and reluctantly removed his hand. It was all Emma could do to keep from laughing. Sure ryan was small and looked young but at least he was slowly growing. Down there he looked almost exactly the same as when he was thirteen and he was small enough back then. Emma was sure her friend was getting a good laugh out of this. 
Once his hand was by his side Emma let go of the money then stretched out her feet for her brother. He knelt down again and started removing her shoes and socks eventually putting the money down to make things easier. The footrub itself wasn't great but that wasn't the point. It's working. I can't wait to really try this out.
Emma lifted a foot up to Ryan's face. "Like it clean."
Ryan hesitated for a brief moment but stuck his tongue out and started cleaning his sister's foot. It tasted sweaty and unpleasant but it was worth the dollar. Once Emma was satisfied she held out her other foot. As she did she noticed her brother's penis starting to harden and emerge from it's sheath. She pulled out another dollar. Ryan's ears perked up but he didn't stop in his task.
"Do you like that?"
Ryan whined but after a moment he nodded. 
"Do you want to cum?"
Ryan nodded again.
"Then you have my permission little Ryan. Go ahead."
Ryan wasted no time in wrapping his pay around his cock. He couldn't remember the last time he'd felt this aroused. The fact that licking his sister's feet was turning him on so much should have bothered him but he just didn't care at this point. His licking did falter as he began stroking faster but Emma didn't comment.
It took less than a minute for Ryan to orgasm, coating the wood floor and his hand in cum. He'd stopped licking completely know and was just enjoying the afterglow. He'd even forgotten about the money for the moment.
"Good boy Ryan."
It suddenly hit him what he'd done, the state he was in. He looked up at Emma in horror but she quickly thrust the money at him. "You've earned this." Ryan relaxed as he took the money. "Want to make it five?"
Ryan nodded with an excited grin on his muzzle. "Good. Lick that up then we can watch some TV. Mum doesn't get home till nine so you don't need to get dressed yet."
Ryan immediately dropped down onto all fours and started licking up his cum, eager to make a nice round five dollars for the night.