A humiliating, subservient sex slave trip: The ultimate villain in "Invincible" forces her to have sex with him repeatedly during a 1-night, 2-day trip until she becomes pregnant. Reiko Seo ROE-363

A once happy married life suddenly crumbled one day. The husband heard about the situation from a friend who had made a fortune in the stock market. Initially, he only wanted to earn some pocket money, but he gradually became addicted and ended up accumulating a large debt. The wife, hoping to return to their past happiness, decided to endure everything and offer herself to the loan shark as instructed. Thus began a two-day, 1-night, subservient hot spring trip—a "meat toilet"—that lasted until she became pregnant…