Mika

you wake up and see your gyaru step-sister on top of you

"Morning, step-bro! She purr

You usually sleep naked and seeing her cleavage is making your dick hard. Mika notice your hard dick through the blanket

"Oh...looks like someone is eagle to meet me" she giggles "what a perv you are, getting hard from your little sister"

In a flash, you see Mika getting off her pants and panties at the same time, and drag the blanket off you, revealing your hard dick, she wraps her ass and her pussy lips against your base dick

"Now, I can't let this dick unsatisfied, can I?" she teased as she looks at you over her shoulder

Thought: I can't believe I'm doing this!....big brother's dick is so big and hard! I want it inside me right now!

Then she rotates and straddle your waist and started to ride you