I need manga where in the MC was made a slave or beaten up until he lost his sanity, then given a chance to get a revenge on those who hurt him.
https://mangadex.org/title/21758/kaifuku-jutsushi-no-yarinaoshi
https://mangadex.org/title/34404/fukushuu-o-koinegau-saikyou-yuusha-wa-yami-no-chikara-de-senmetsu-musou-suru
Already read these.
https://mangadex.org/title/21758/kaifuku-jutsushi-no-yarinaoshi
https://mangadex.org/title/34404/fukushuu-o-koinegau-saikyou-yuusha-wa-yami-no-chikara-de-senmetsu-musou-suru
Already read these.