Sailor Aquas, possessing both intellectual charm and a seductive figure, heads to a dangerous location at the request of her respected mentor, Mask Armani, to investigate reports of monster sightings. Upon arrival, she discovers the area has already become a monster nest. Transforming into her heroic form, Sailor Aquas defeats numerous monsters, but soon encounters a powerful fiend directly serving the Demon King. Overwhelmingly strong—so much that it seems he anticipated her solo assault—he quickly drives her into a corner. A fierce back-and-forth battle ensues, dragging her closer and closer to despair. Amid the struggle, a dramatic emotional conflict unfolds within her heart. Ultimately, she is captured as a sacrifice for the Demon King and suffers the tragic fate of having her body devoured… [BAD END]