Ruby walked into her dorm with Zwei in her backpack shortly after their confrontation with the White Fang and the grim when the train smashed into the wall separating the mountain glenn rail roads with the rest of Vale. She appeared tired, and that she was.
But she was also very VERY horny. Yang, Weiss, and Blake were all out doing other things, Yang was likely drinking with this Junior character she's heard about, Weiss was likely burning obscene amounts of money on new clothing or other items, and Blake was... doing something, to be honest, Ruby didn't know what Blake did when she left, but she didn't care, she was alone in her dorm. She jumped onto her bed, with all of her clothes, excluding her bra and panties, were on the floor.
She removed her undergarmets and began to play with herself, placing her right hand onto her wet vagina, and her left hand onto her breast. And since she was alone, she got to make loud noises since it was pretty hard to hear somebody from outside of their dorm room.
"Oh my god YES!" She shouted, as she thought of being dominated by Cardin, even though she would never want that in reality, just the thought of it is what turned her on.
Half way through her session is when Zwei jumped onto the bed and began licking her pussy, which startled ruby.
"Zwei! what are you- oh... oh my god, YES!" She moaned in immense pleasure as the dog ran it's tounge deep inside of her.
"Yes, keep going Zwei, good dog!" She screamed, feeling nothing but pure desire.
Suddenly, and much to the disappointment of ruby, the little black corgi stopped eating her out.
"Why'd ya stop?" She asked him even though she knew that she would never get a proper response from the Canine. She rolled over onto her stomach in disappointment, only to have the dog start humping her.
This gave Ruby an idea, not one that she was proud of, but still an idea none the less. She got into the doggystyle position and Zwei went to town on her.
"Oh, AH AH AH! YES YES YES! OH MY GOD YES! ZWEI!" She moaned and moaned. Somehow, this went on for a while, almost 30 minutes in fact.
"Yes, Zwei, fuck, fuck me, yes, I love you, oh my god, fuck, fuck, fuck, yeah, yeah, YES YES YES YES YES!" She screamed as she climaxed, and the corgi splurged his fluids inside of her womb.
"Ahhh... that was amazing." Ruby muttered as she slid under the covers and went to sleep, with Zwei lying at her feet. Ruby definitely has a new playmate for when she's alone.