[Chinese subtitles] GS-437 My cousin, who I used to take baths with a lot, has grown up and come to stay with me. I get so excited by the sight of my defenseless cousin's panties that I can't help but get an erection... My cousin plays a devilish prank on me, touching my dick with pleasure. I try to escape into the bath and jerk off by myself, but my cousin comes in saying, "I thought so"...