My beautiful stepsister Ichika made me strong

My beautiful stepsister Ichika made me strong. She always waits for me when I come home from school so she can come into my room and ask for sex. I refused many times but failed because I couldn't avoid her forever. In the end, my shyness was released by my stepsister, she helped me be strong in sex a lot. Although we are not blood related, doing this is still considered incest.