The World's Finest Assassin Gets Reincarnated in Another World as an Aristocrat

🇯🇵世界最高の暗殺者、異世界貴族に転生する · Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru

MangaShounenOngoing🇯🇵 First published in 2019ActionAdventureFantasy

Rui Tsukiyo story · Hamao Sumeragi story, art

When the most accomplished assassin on Earth meets his end just before retirement, he finds himself standing before a goddess. Her world is headed for disaster, and she has need of his particular set of skills.

Synopsis via AniList