Waking up, still horny

The second you feel your concioisness arise again, you immediately feel your head fill with all kinds of dirty thoughts. But who would be your first target?

Your sister, Alina, was home. She was a 19 year old brunette girl, 5"1' tall, with a c cup and an ass you always dreamed of fucking. Of course you thought this would never be possible, since she always bossed you around and it seemed like she hated you, but now you had everything you needed...