Death's Daughter and the Ebony Blade

🇯🇵死神に育てられた少女は漆黒の剣を胸に抱く · Shinigami ni Sodaterareta Shoujo wa Shikkoku no Ken wo Mune ni Idaku

MangaSeinenOngoing🇯🇵 First published in 2019ActionAdventureFantasy

Maito Ayamine story · Suiren Matsukaze art

Once upon a time, in a forgotten temple in the middle of a deep, dark forest, a god of death stumbles across a baby girl called Olivia and takes her in to raise as its own. Under the death god's tutelage, little Olivia spends her days studying to become a brilliant tactician and master of the blade.

Synopsis via AniList