Author Tatsuki Fujimoto's hit shonen manga series Chainsaw Man is now considered part of the unofficial but widely recognized "dark trio" alongside two other dark shonen series, Jujutsu Kaisen and Hell's Paradise. All three of those series have strong horror elements, graphic combat scenes, and personal arcs that involve grief, betrayal, revenge, and generally feeling lost in the world. These are grim storylines, but they're also highly compelling.
Source：https://www.cbr.com/chainsaw-man-its-dark-trio/
