That JAV

My sister, who lives alone, was coming back to my parents' house for summer vacation. When she came back, she had dyed her hair blonde and became a gal, unlike the last time I saw her. However, it was only her appearance that had changed, nothing had changed on the inside. My sister loves me, her brother, and since my parents are often away for work, she has always taken care of me in some way. And today, after a long absence, she is still concerned about my sexuality, just as she used to be...