Sekai Saikyou no Assassin, Isekai Kizoku ni Tensei Suru - MangaDex

The most dangerous prey 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. Armed with powerful new abilities and decades of deadly knowledge, he begins his second life as Lugh, young scion of the Tuatha Dé clan of assassins. His mission: to find and eliminate the strongest individual in this world—the hero!

Isekai Saikou no Kizoku, Harem wo Fuyasu Hodo Tsuyoku Naru - MangaDex

Comics & Manga – 1 Genre_Action & Adventure Manga – Page 18 – Japanese Book Store

Sekai Saikyou no Assassin, Isekai Kizoku ni Tensei Suru

Virus Tensei kara Hajimaru Isekai Kansen Monogatar] : r/animenocontext

Adventures in an Unknown Land — Mangadex went down so I read alot 3/7

Assassin de Aru Ore no Sutetasu ga Yuusha Yori mo Akiraka ni Tsuyoi Nodaga - MangaDex

Isekai Kenja no Tensei Musou: Game no Chishiki de Isekai Saikyou - MangaDex

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DROPE