I think it goes along the lines of protagonist being a cannon fodder who “raises” the hero (original mc) and villain of the story. It is most likely quick transmigration and the protagonist clears his name of being a bad person (to hero and villain, probably everyone else too idk). It is bl, any suggestions appreciated. (POSSIBLE SPOILERS) There is a certain arc where the mc transmigrates into a perverted character who likes to adopt and abuse orphans. The hero and villain were adopted by him and were abused until mc came and changed that.
He adopts a bunch of orphans and trains them as successors while doing a lot of missions, right? And ML is like one of the middle kids while some of the other kids are romantically involved with other?
I can’t really remember much but I think mc only kept the hero and villain, though I’m not sure because he might’ve had other children other than them when he transmigrated. I also don’t remember the ML because there were quite a few love interests (it’s most likely the villain though). The villain and hero were supposed to have relations with each other I believe (?).