My super cute little sister is always studying and doesn't seem interested in guys, but when I tried giving her an erotic aphrodisiac I bought online, her eyes changed color and she started rubbing her breasts, stuck her hand in her underwear and stirred up her pussy, and while drooling, she started biting my dick, which naturally made me get hard and I didn't know what to do, so I let my little sister do what she wanted. Of the six studious little sisters, they were also good students!? A total of six stories of a brother's naughty pranks, in which he gets toyed with by his sisters who have become horny from the aphrodisiac and feels good.