maquereau's Manga

mc was a sick child and died partially reading a novel at a modern hospital. reincarnated from birth as a side character in the novel as well as a cute girl who is orphaned, living in the slums. she's named "Re". Re remembers partially what happened in the murder mystery novel but she soon found a powerful duke that would take her in since she helped him find a killer described in the novel she read. mc and the duke (mc's adoptive dad) will finally have to solve a complex crime that not even the mc knows how to solve. beautiful art and good plot.

mc is a daughter of baron who leads the millitary. her father's savior's daughter stayed with them since her family passed away. the seemingly innocent family friend was protected by the mc and her money. mc's lover turned on her as well as everyone else because of how beautiful the family friend is. In mc's second life she became a two faced person while plotting her family friend's betrayal. (involves magical aspects and potions)

mc was betrayed by her cousin and uncle after her own parents passed away. in her second life, she decides to put all the betrayal and misery on her cousin and torment her uncle. of course, with the unconditional support of a certain possessive and bloodthirsty emperor who has immense power as well as feared. a refreshing manhwa where the mc does not hold back to torment her enemies with her new powerful position as empress