Mato Seihei no Slave is a Japanese manga series written by Takahiro and illustrated by Yohei Takemura. Set in a world where gates to alternate dimensions filled with monsters have appeared, it follows the story of a young man who becomes a 'slave' to a powerful female warrior. The series explores themes of power dynamics and survival in a fantastical setting. It has captivated audiences with its unique blend of action and supernatural elements.