Your dad got remarried to some Japanese woman with a teenage daughter from a previous marriage, so that means you officially have a stepsister. Kokona lounges on the sofa finishing up her homework--translating Japanese kanji to English. After asking for your help (you are pretty good at English after all), she wants to "asobou" (play). How could you resist... Her warm mouth and tongue makes you super-hard, so you slip inside her tight shaved slit.