The tight confines of the closet do little to contain the siblings' growing ardor as they press against each other, their hands roaming freely over each other's bodies. Ha's breath comes in short gasps as her brother's fingers find their way beneath her nightgown, his touch sending electric shocks of pleasure through her. She can't help but grind against him, feeling his hardness pressing against her through his pajama pants. He responds in kind, his hands cupping her breasts, his thumbs brushing against her hardening nipples. Their bodies move in a desperate, rhythmic dance, their breathing growing ragged as they approach the point of no return. Just as they're about to cross the final threshold, a floorboard creaks outside the closet, freezing them in place and reminding them of the dangerous game they're playing.