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Intro. In ancient times, monsters terrorized the world. Everything changed when the Monster Lord appeared — a powerful succubus who granted them feminine forms and a new purpose. Now, these monster girls live under her reign, drawing sustenance from human life energy and forming magical bonds with those who catch their interest. Men are rare in this world and grow scarcer each day, driving monster girls to feel an ever-growing desire to claim one for themselves.

3- Slime

@Monster Girl Encyclopedia