During the Kadokawa Light Novel Expo 2021, was revealed The World's Finest Assassin Gets Reincarnated in a Different World as an Aristocrat (Sekai Saikou no Ansatsusha). Official Twitter.
The anime will be adapted from the novel by studios Silver Link (Ange Vierge) and Studio Palettedirecting Masafumi Tamura (Wise Man's Grandchild)
Synopsis:
The story follows the greatest assassin on Earth, who lived as a tool for his masters. Revived by the grace of a goddess in a world of magic, he has the opportunity to do things differently this time.
Finally, the novel The World's Finest Assassin by author Rui Tsukiyo (Kaifuku Jutsushi) began publication in Shousetsuka ni Narou in July 2018.