Be it Jp, Kr, or Ch (Dont matter) but is there a novel where the mc has a time travel method where whenever he f up he can go back to the past and fix it like the spring autumm cicada in Reverend Insanity Oh and no YAOI, YURI, SHOUJO, JOSEI No dense mc IF possible (dont really mind it but dont like it either)
hmm, maybe SSS-Class Suicide Hunter ? MC can travel back in time if he kills himself, which he uses a lot
oh man have I got the one for you the bleak walker on scribblehub is great and I haven't read blessed time but it looks to be in your alley. Re;zero and yes it's Japanese and a bit drama heavy, but hey that's an interesting category. maybe 12 hours after on webnovel although that goes in a different direction. Oh and perfect run on RRL - seriously you'll probably like this. Although they lack the viciousness of reverand insanity the intelligence quotient is quite high in these catergories (well - except for 12 hours after)
How about: https://www.novelupdates.com/series/steinsgate/ and https://www.novelupdates.com/series/neet-receives-a-dating-sim-game-leveling-system/