Chainsaw Man and Jujutsu Kaisen both start with the main protagonist merging/combining with a demon or devil; CM's being Pochita and Denji, JJK's being Yuuji and Sukuna. Jujutsu Kaisen and Chainsaw Man see the protagonists as someone/thing that needs to be eliminated but will let them live...
Chainsaw Man and Jujutsu Kaisen both start with the main protagonist merging/combining with a demon or devil; CM's being Pochita and Denji, JJK's being Yuuji and Sukuna. Jujutsu Kaisen and Chainsaw Man see the protagonists as someone/thing that needs to be eliminated but will let them live...