Slimy rat mc that u love to hate or hate to love with morally grey personality such as money hungry, shameless, cunning, power hungry, results over process but overall with own bottomline (mostly saving the word or live own life or for friendship) 

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Additional novel not listed in novel updates (highly recommended) :
Quick Transmigration: Is it Better to be a Beta?

https://chrysanthemumgarden.com/novel-tl/btbab/

Summary:
One bis*xual tr*shcan joins hands with one cheap system and they do their best to improve the world. Sort of... 

In short Mc is such a scum of a mansl*t that in one of the world he cause rebellion in his country cause he f*cked too many ppl while the system is useless n can't even recognise the Protagonist of the world cause he spent all his tech point in space Canon