Kouji Mikagami is unremarkable at everything except video games. Summoned to another world and handed Skill Copy, an ability that mimics his opponents', he expects a fast climb to the top, until the gift is graded trash-tier and he is sold into the coliseum as a combat slave. With only that 'weakest' skill and his gamer instincts, Kouji has one way forward: beat down the strongest female fighters thrown against him and make a name in the arena.