@twilightspirits Yes to both, it's called Death Note.
@BiggusDickusII I was thinking that too! Although maybe she's worse because the main girl is acting dumber in general and also like she doesn't notice. Like half the time Leabric doesn't have a good look on her face and her words and tone are horrible. She barely puts on an act really. And when the main girl acts clingy she immediately puts a distance between them. Also besides this whole plan of Leabric and the grand duke's not making sense, like usually you wouldn't cover up your daughter's death and then replace her let alone after only mourning for two months (that's nothing). Like it makes more sense to have an adoptive daughter who looks like her and slowly ask her to do things similar to the dead one, maybe subconsciously wanting her to be like like the other idk. But the way they are rushing everything too, like her training and going to the house etc. The mc should have realized something was up even if he wanted her to be his daughter. Like expecting her to learn etiquette, history, all the top nobles names, background and location in three weeks and change? Also making her go to the main house so soon? Normal noble ladies learn this stuff since they were young over years until they have their debut I assume. They should have at least given the mc 6 months to a year if it was like what they told her. It's suspicious, I guess the past her was just happy to receive stuff and the father said she wasn't the brightest, but still. Also the father is one to talk, he isn't too bright either. It's one thing for the guy you know to help your daughter debut (even if it is fishy) but for this woman to appear and help makes no sense and he didn't even question the fact that she appeared right before he got to the other nobles house, until the daughter said they're bad. Lol, sorry for writing so much.