The World's Finest Assassin Gets Reincarnated in Another World manga volume 1 features story by Rui Tsukiyo and art by Reia and Hamao Sumeragi.

The world's finest assassin has been reincarnated in another world. His mission-to kill the Hero prophesized to save the world from disaster! With his deadly skills from his previous life and the magic he learns in this one, he's well on his way to becoming the greatest assassin in all of history...