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not exactly like csm but i recommend jigokuraku if you're looking for supernatural shounen with gore

Try
http://www.mangago.zone/read-manga/kaiju_no_8/
and
http://www.mangago.zone/read-manga/jujutsu_kaisen/

Not a manga but a movie, I hope that’s ok?

It’s a movie called “Machine girl” and you can watch it on You tube

(๑•ㅂ•)و✧