SNOS-190 "Big brother, look!" My stepsister, whom I thought was super innocent, is secretly a pervert... She seduces me with no underwear on in broad daylight. - Araki Kisora

That day, when my stepsister Nozomi's skirt lifted up—a girl I thought was pure and innocent—my everyday life crumbled. She wasn't wearing any underwear. At the breakfast table, in a fleeting moment when our parents weren't looking, she innocently exposed her bare private parts. "You saw, didn't you? Were you turned on?"... Her innocent, devilish whispers stripped away my brotherly reason, and an uncontrollable lust overflowed, finally crossing the line...