She let it happen

Koharu seemed to like what I did. Her pleasure grotto gladly received my finger. I pulled Koharu closer to me. She started rubbing her little ass at my crotch. The touch made the blood shoot in my cock. When Koharu realized that, she pressed herself even harder against me. Out of surprise that Koharu didn't resist I stopped fingering her. I kind of enjoyed feeling her butt against my crotch. Suddenly I felt how Koharu grabbed my hand and guided it between her legs again. She opened her thighs a little further and pushed two of my fingers into her pussy. As if on command, I began to finger her again. Her breathing became heavier. My other hand worked on Koharus tits. Her nipples were stiff and got up slightly. Koharu opened her legs even further, so that I could now use three fingers to make her happy. "Do not stop now", she sighed as she pushed my fingers even further into her pussy with her small hand and rubbed her ass even harder on my pants. My movements got faster and soon I realized how a wave of arousal went through her body.
" Deeper! Faster!
"I obeyed, and in Koharu's some moans mingled into her breathing. Finally her whole body tensed, and I stopped moving my fingers and felt her lips contract. I let go of Koharu, who still was breathless. She turned slowly to look at me with her fawn eyes.
"You passed your first test - even though you did not know it was a test, and good performances are rewarded at the Kunimi-yama ..."