Sailor Aquas, aka Mizutori Kyouko, stands ready for battle. Having briefly enjoyed a fleeting peace, she is thrust once again into combat by the Demon King's sinister plot. The Demon King selects monsters specifically designed to exploit the weaknesses of each of the Sailor Angels, expanding the battlefield. Among them is the Poison Bee Demon, armed with a venomous stinger and a flaming sword, targeting Sailor Aquas' body with relentless attacks. Confident in his inevitable victory, the Poison Bee Demon aims to crush Sailor Aquas in utter humiliation. While she is unconscious, he inserts a demonic egg from the netherworld into her vagina, seeking to drain her fighting power completely.
Unaware of this violation, Sailor Aquas re-enters battle against the monsters and succeeds in blinding the Poison Bee Demon. However, due to the demon's superhuman hearing, the fight remains a continuous series of near-death encounters. Suddenly, a strange transformation occurs within Sailor Aquas' body—demonic vines from the underworld sprout from her most intimate areas, hindering her combat ability. The wriggling sensation and the draining of her energy leave her battered and weakened, overwhelmed by shame until she involuntarily urinates. Finally captured and presented to the Demon King, Sailor Aquas is brutally humiliated, dominated, and turned into his sex slave. What fate awaits her? [HAPPY END]