Seriously, the s*x scenes takes more than half a dozen chapters. ML has a stamina like a stallion and the MC has a recovery rate of a, uh, let's just say she bounces back quickly.
especially since as soon as she transmigrated into her first body she gets pounced on by the ML and loses her V card.
Basic recipe for each world: MC transmigrates to a cannon fodder character, receives memories and wishes of said character, tries to fulfill them to compete her mission, and at the same make snu-snu with the male protagonist of that world, in order to "fuel" up (i.e., SEMEN, her fuel is semen) so she could move on to the next world. Don't ask me the mechanics of why that is, but MC really has no choice if she wants to survive. Obstacles to both of this things of course is the fated female protagonists of these worlds. Good thing then that she was "blessed" by the system with the optimum body for s*x.
The comeuppance is worth it though, when the ML finally realizes that he just might have lost the MC forever, it breaks him so completely to the point that he would rather live in a world of his delusion than face the reality that the MC is gone.
In the latest chapter I have read, it also appears that all the MLs are iterations of the same person, who is in love-hate with MC and is pursuing her, to which MC is still ignorant of, although her system is vaguely sensing danger even if it couldn't pinpoint it
MC meets ML, who fixates on him because of his uncanny resemblance to MC's original body, who ML refuses to believe is truly dead as there was no body recovered. MC just assumes ML is fixated on him because ML sees his resemblance to ML's brother-in-law again.
ML all these years is grieving for MC, whom he realized too late he was actually in love with. He was shaken to see the current MC and later coerces MC into a relationship as a substitute for the original MC, while MC just assumes ML is using him again as a substitute for his unrequited love, ML's bro-in-law.
As other reviewers have warned, the MC is utterly shameless :) and very, very selfish.
Some have accused him of being bipolar, as when he gets into character, he really loses himself in the role so that his thoughts as seen by the reader are purely in the POV of the character he is playing, method acting taken to the extreme.
He is the consummate actor, supremely devious and calculating three steps ahead of everyone else.
When he gets transmigrated back to his old character, where a varying interval of time has already passed from the time he had originally left, he has to deal with the consequences of his last acts in the world, and face the protagonist again. He manages to turn the situation to his advantage, and twist events to come out looking like a misunderstood martyr or victim, thereby making the protagonist regret his actions and reconcile with them.
MC seems to be very cool and detached about the whole thing, even accused by his own system as being callous and self-centered, which he unrepentantly admits to :) Whatever he feels about the protagonist, he is very clear about the fact that he can't truly fall in love with them, and that he has to complete his mission no matter what.
The ML meanwhile, has been blackened, meaning he lost all trust and his love has turned to hatred. He is obsessed with revenge against the MC, wanting to find him, capture and imprison him so they could never leave again. He is ruthlessly possessive and cruel in his treatment of the MC, who 'stoically' endures his abuse. It is only later that everything is revealed to be a 'misunderstanding' to his utter guilt and self-condemnation.
After MC manages to fulfill his mission, his character finally dies (traumatizing the protagonist again of course although he is no longer blackened), and he moves on to the next world he has to set to rights.
breaking the heart of the protagonist is one thing, condemning millions to die is another,
especially the fourth arc, where MC is a doctor whose wife and child were killed in a hit and run with the arrogant and unrepentant killer walking scot-free; on impulse he kidnapped the perp's child and raised him as his own. But in the end, he returned said child back to his family for the child's sake. The child grew up hating the man he once loved as his father for abandoning him and for the lies his family fed him about why. MC and child met again, and all the hatred, despair and pain that happened caused the MC to break with reality, convinced the one tormenting him was the man who had killed his wife and kid, as the son he raised and loved would never hurt him this way