The Simple Life of Killing Demons - Chapter 25Book 12:

Arthur Grail, a hardcore player of the VRMMO Trinity Star Online, woke up one day in the body of Gerard Astoria—a petty villain fated to die before the main story even began. To make matters worse, Gerard's death was a crucial event in the game's narrative. If he didn’t meet his predetermined end, it could disrupt the story entirely, leading the universe toward one of the countless “bad end” routes!Unwilling to leave his fate to chance, Arthur decided to take matters into his own hands—recruiting the “player” as his partner to help him clear the game and rewrite his destiny.But wait—“Why is the player not a dude but a sharp-tongued beauty instead?!”Follow Arthur's odyssey, filled with trouble at every turn, as he works to uncover the mystery behind his awakening in a universe eerily similar to Trinity Star Online's setting, all while trying to save the entire universe… without forgetting to enjoy himself!

Chen Yan travels between worlds, ending up becoming an honorable prince in a medieval fantasy world. Yet this world was not quite as simple as he thought. Witches with magical powers abound, and fearsome wars between churches and kingdoms rage throughout the land.

Roland, a prince regarded as hopeless by his own father and assigned to the worst fief, spends his time developing a poor and backward town into a strong and modern city, while fighting against his siblings for the throne and absolute control over the kingdom. Join Roland as he befriends and allies with witches and, through fighting and even farming, pushes back invaders coming from the realm of evil.

- Description from Novelupdates

She became the nanny of Claude, the blackened male protagonist who would destroy the world. If this continues, she will be killed by the cursed power possessed by the blackened male protagonist. So, she decided to pour out her love for the blackened male protagonist to prevent the blackening. She also raised the child’s self-esteem, and made the Duke act like a proper father, as fatherly love was essential for the male protagonist’s self-esteem. She thought the child was gradually recovering his bright face, and the Duke was now learning how to gradually give love to the child. But she doesn’t know if it’s because she worked too hard….? “It has always been a problem. You have hundreds of reasons to abandon me, but I don’t have a single one.” “Nanny will always be by my side, right? That’s why you can’t go. Never, never.” Two men started obsessing over me.