Yuuki Wakura is a central character in the anime series 'Mato Seihei no Slave', also known as 'Slave of the Magic Capital's Elite Troops'. He is an ordinary high school student who finds himself transported to Mato, a parallel world filled with dangerous creatures. Yuuki possesses the unique ability to transform into a powerful being by being 'enslaved' by the female warriors of Mato. This ability makes him a valuable ally to the Anti-Demon Corps, who fight to protect humanity. His journey involves growth, self-discovery, and forming deep bonds with the warriors who rely on his strength.