Dance of the blades

A young boy Lan Yuan courtesy name Shizui, finds himself lost in the world of flesh eating monsters that stalk in the shadows of every corner. As a young and fateful son, he must navigate through this world and successfully turn his father back into a human being. But he finds that his quest may not be as easy as it seems.

Credit to Mo Xiang Tong Xiu, the original author of Mó Dào Zǔ Shī
Credit to Koyoharu Gotouge the original person that wrote Demon Slayer