"Lisa... why do you come to school without underwear!" My Lisa has been tempting me a lot lately by going without underwear. I want to maintain my dignity as an older brother, but of course I can't resist. When she glances at me in the library, we have sex secretly, and the magic of inserting her bare ass from behind in a skirt during club activities. Are you crazy, giving me a footjob in pantyhose during class? And to make him jealous, she even seduces another guy... It's outrageous that she invites her older brother into a threesome! My devilish little sister keeps calling out "big brother" and teases me again today!