義理の妹は口にキスをするのが大好き

I was the one who taught my stepsister to kiss, and she loved my kisses so much, that now she prefers to kiss me whenever she gets the chance. In this case, she entered my room in the middle of the night and asked me almost on her knees to kiss her passionately. Of course, as the good stepbrother that I am, I accepted.