"Hate us while you can." Komari's two stepbrothers "take care" of her every night until she's ready to pass out. Her mother remarried, and she gained two brothers--the calm and kind Tenma and the nonchalant Toma. One day, however, the two discover her secret... In exchange for keeping it a secret from their family, Komari becomes the twins' toy. "There's no need to be afraid." "Stop moaning just from getting fingered." "Looks like we made you a woman!" "That expression of yours is just turning us sadists on even more." It's open season for these two hardcore twins!