A unique story where a younger brother, irritated by his annoying older sister, repeatedly uses chloroform to render her unconscious. Ryo, the older sister, is a meddling and strict stewardess-type who constantly scolds her brother for his reckless behavior, fueling his frustration. By knocking her out with chloroform, the brother takes pleasure in seeing her defenseless state. He becomes aroused by her rolling eyes and blissful unconscious expressions, though the chloroform eventually triggers seizures, leaving her in a disturbing condition. When the younger sister is caught attempting to steal Ryo's wallet, she is punished with kicks. Vowing revenge, the younger sister uses chloroform on Ryo again, taking embarrassing photos of her unconscious body. How will the sisters, both left with rolled-back eyes and unconscious, face their fate? The truth unfolds!