We(it is I, who) usually read about MC being so powerful or so overpowered. But! Those MCs are usually the one who gets 'manipulated' by some more powerful entity. What I'm looking for is: MC who 'manipulated' others until that others be so powerful(OP).
Yan 'low key' zhaoge. History strongest senior brother. And they all say being a librarian is a Dead End job.
In some way or another... Being Able to Edit Skills in Another World, I Gained OP Waifus ... the MC can quite literally manipulate others' skills to be overpowered but I don't think you meant that. Running Away From The Hero! ... would probably be closer but... it's probably not what you want either. The Deadbeat Master and Genius Disciple’s Misunderstood Workshop ... similiar to the two above there's really not much scheming behind the MC making others (or in this case one other) OP My Death Flags Show No Sign of Ending ... Maybe this one is actually close to what you're looking for. I Reincarnated For Nothing ... Well at least this one's actually doing some manipulating while making others OP, I guess? If they aren't you can just ignore me...
Girl let me teach you cultivation Or something.. Welp.. the MC is a sole cultivator in the modern world.. nothing can even stand close to his power.. period
Emperor's Domination fits the bill ~ Random frickin stranger: "You sure m8?" MC: "Because I'm Li Qiye." Stranger: "Uh, sure. But, like, no other reason though?" MC: "Because I'm Li Qiye." Stranger be like : "k bruh"
read Dungeon Defense it's the closest you can get to a manipulative MC (well Warlock of the Magus World works too) and although i only watched the drama i think Nirvana In Fire fits the bill too since in the drama he the MC literaly had the whole story planned from the first episode and since the drama is made from the novel you can expect a good read