Responses
Kill the hero ?
No, its a manga
https://www.mangago.zone/read-manga/the_hero_who_seeks_revenge_shall_exterminate_with_darkness/
I think it might be this. It fits your description of a hero being reincarnated after being betrayed by his comrades and the kingdom's people—a lot of gore and triggering themes.
Omg! Thank youu!!!
Can anyone help me find this manga about a hero who was betrayed and killed by his friends? Then he was reincarnated and started brutally killing/torturing the people who were bad to him as a revenge. I remember it has a lot of gore.