One of the most unorthodox hits of the shonen genre’s new generation, Tatsuki Fujimoto’s Chainsaw Man has earned a reputation for being a gritty, violent, and unapologetically weird subversion of battle shonen tropes. Following the story of Denji, a lowlife Devil Hunter who fuses with the Hero of Hell Chainsaw Devil Pochita, CSM is a cruel, turbulent tale few would associate with the cheery clichés the shonen genre helped popularize.
Source:https://www.cbr.com/shonen-tropes-chainsaw-man-embraces-subverts/