VS-634 Yuzuki Mai, Misato Kanade, Sakiuchi Naomi – The Captured Female Warrior’s Ordeal in Nara (Mission) Cinemagic

A female spy sneaks into an old house while tracking maids who keep disappearing one after another. However, she falls into the enemy's trap, gets captured, and is subjected to interrogation. The interrogation turns out to be a terrifying, depraved torture session in a horrifying dungeon.