anything hella gory/messed up example would be Juujika no Rokunin or something along that...

https://www.mangago.me/read-manga/boku_no_namae_wa_shounen_a/

https://www.mangago.me/read-manga/shingeki_no_kyojin/

https://www.mangago.me/read-manga/namae_no_nai_kaibutsu/

https://www.mangago.me/read-manga/kuronou_syndrome/

https://www.mangago.me/read-manga/brutal_satsujin_kansatsukan_no_kokuhaku/

https://www.mangago.me/read-manga/true_education/

https://www.mangago.me/read-manga/heartless/
https://www.mangago.me/read-manga/feeding_lamb/

Like yo pfp dude (づ￣ ³￣)づ