Even though Jujutsu Kaisen is a shonen manga series, many consider it to be seinen because of its excellent portrayal of some of the darkest, grittiest, and most realistic themes in modern anime. It also helps that the manga is famously gory and horrifying. However, these themes often guarantee that characters suffer more than their shonen peers.
Source：https://www.cbr.com/jjk-manga-heartbreaking-sad-cry/
