The MCs Revenge

His twin brother was murdered, and it's only natural he takes his place as a Knights apprentice to weed out his murderers. Note: very slow burn plot heavy action webtoon. It's so fuckin good, but not for people who like instant gratification

Charlize spent 400 years turned into a magic sword, trapped with only users hearing her voice, but ignoring her. She was turned into a weapon that eventually cut down even her own family. Traumatized and isolated, she wished to break free and get revenge. This story is her corrupted path as she wakes up before she could be turned into a sword again.

Hero was betrayed by his comrades, he died a wakes up as somebody else years in the past. Twisted Mc, basic AF story elements, comedy. This is fun to read, but it's not good as in top tier. It's enjoyable if these types of stories are your fav.

Revenge is not the main plot, but it has such satisfying revenge moments, I'm adding it anyways.
VR game about a MC who is so ridiculously good at games, he basically trolls the other high ranking players before quitting or moving to a new game. When the new VR game Arcadia is released, of course he has to join in. Enter chaos.