So i got tired with mc which is just effing everyone just because some chick got taken by young master, or something like suicidal full of armor plot genius without equals. Like the true warriors, mc need to know when to retreat and take some breath to train and revenge.
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Try Analicts of a Righteous Father. I found it today and couldn't stop reading. Normal man, ahead of his original time for when he has transmigrated so far. Not too OP, rational MC, no harem. CN main character and world hopping scenario, but no characters outside the system and the MC reappear in each world. Anyways, definitely has a rational MC.
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I'd say try a Korean cultivation novel/manga instead of a Chinese one. The Schoolar's Reincarnation. Volcanic Age
Korean huh... They are psycopath, somehow i can't read their intention.. not the korean people, of course. Their MC is only think how to kill, level up, and manipulate talented people..