Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru

Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru follows the world's greatest assassin, a man whose lifelong loyalty to the organization that raised him is repaid with betrayal and death. When he comes face to face with a goddess drawn to his exceptional skills, she offers him reincarnation ...