Imi's world is shaken when she's cornered with her stepbrother in their family's old tokai. The air is thick with tension, their bodies inches apart in the confined space. Imi's eyes dart down, taking in the substantial bulge straining against her brother's pants. She swallows hard, her heart pounding. She knows she should look away, but she can't. Her curiosity piqued, she tentatively reaches out, her fingers brushing against the fabric covering his erection. She hears his sharp intake of breath, feels his cock jump at her touch. The line between sin and desire blurs as she begins to explore, her body responding to his.