Sister turned into Mistress

It was a common Friday afternoon you had no plans for the time being, so you thought of grabbing a snack and stay in to watch netflix. You were home alone with your younger sister but you hadn't seen her for a few hours so you thought she may have gone out for the night. After a few episodes of your favourite series on Netflix you got thirsty so you stood up and went to the kitchen to get a glass of water. On your way there you bumped into your sister, wearing a really sexy dress and a 3 inches pair of high heels. You asked about her plans and she told you she would go out with her friend for some drinks but before she managed to finish her sentence you heard a notification on her phone. She checked it up and got really angry as her friends had just cancelled their plans. You two never had the best relationship but you felt bad for her so you proposed her of going out with you for a drink or two. She thought about it fir a while but eventually she said fine. The drinks came one after another and before you know it you were both pretty drunk. While joking around you made a bet about you drinking 10 shots in a row, if you were able to do it, she would have to be your personal slave for the rest if the night, but if you failed, you would have to do whatever she asks for. You were very determined but lost. A huge grin on her smile appeared as soon as you lost following by her whispering in your ear " you ain't gonna like it bro". The rest of the night passed by pretty fast and you got home. When you arrived you told her it was fun but you gotta chill alone for the rest of the night. She then smiled and said:
-Not so fast big bro, you lost the bet, remember, you gotta do whatever I want.
You said fine and asked what it was. She put her finger on her chin and thought for a moment, then suddenly smiled and said:
-My feet, they are killing me, massage them
You turned red as you always had a thing for feet. You stood there frozen not knowing what to answer yo her.
She walked to the living room, sat on the sofa and took off her heels. She stretched her legs on the coffee table, waving at you with her soles, saying:
-Come on big brooo, you date is waiting for you hehehe.
You went there, sat down in front of the coffee table and started massaging her feet. You had a huge boner and your eyes were stuck looking at her meety sexy soles, you wanted so bad to lick them but tried to behave. After a while you couldn't hold yourself so you said:
-You know,I always thought you have beautiful feet, the truth is I have a foot fetish, so I always admired your soles.
Your sister laughed as she couldn't believe in her ears. She said:
-Ahahaha you what?? A foot fetish?? About your little sister's feet? You are such a pervert big bro.
You stood there all red not saying anything.
Them she smiled and said:
-You know what, why don't you prove it??
You seemed confused and said "uh?"
She said:
-Prove me you really admire my feet, give them a kiss hahaha
-Are you sure?? , you asked
-Of course, go for it big bro, show me how much you love my feet
You couldn't hold back so you started kissing the hell out if her feet.
She started laughing making fun of you, and said:
-Come on, make out with my soles, kiss them passionate like they are your girlfriend.
You kept kissing and licking her feet for the next hour.
When you finished she told you:
-You know what bro? Thay was pretty fun, I loved having you down there. Given the big pervert you are, and the bet you lost, I am gonna make you my personal foot slave.
You thought that was pretty embarrassing and that you shouldn't accept it, but you couldn't get enough if her feet, so you went for it.

You passed the next week being your little sister's foot bitch.

To be continued...