
I swear these readers are dumb as shit like ever know what perspective means? All characters in the story believe that the MC is weak coz he just woke up from coma(although sometimes they feel something amiss) so how the hell would the princess know that he is so OP like shit.
It is an anomaly to imagine that a person who woke up from coma suddenly becomes so strong like he has all powers and can beat the shit out of you
╮( ̄▽ ̄)╭

Well the problem is will Rachel do her part of the deal? I can just imagine what she'll do if she's crown as the empress most likely she'll kill Marie in order to hide her secret/ to preserve her 'wisdom' as not to ruin her reputation

Problem isn't that, my guess is that Rachel won't even get a chance. Every time the crown prince ask her if she really did everything. My guess is that he knows it is all done by Marie. Especially when it came to the baking. At this point I would put my money on the fact that he thinks she is a liar.

True but also I just thought of something, there is no way to get rid of Marie so easily within the palace because everyone knows that the crown prince is interested or fond of her, it's why she is not bullied. Sadly it would be best to "let he go" and then kill her outside. Or maybe not though Rachel seriously doesn't seem to smart with Marie having to help her with everything.

Most notorious serial killers tend to leave traces(their trademark) or give a tip to someone aka police or anyone when planning/executing a crime as it somehow made them feel a strong adrenaline rush knowing that they will be caught. They want to know what kind of expression you're making and how it affects you as they take pleasure on that as well.
There are also certain cases wherein the serial killer tips the police in hopes of stopping them from committing the crime but failed.
So Lee Sangmin's behavior may be due to having an abusive and scumbag of a father but it's not an excuse to commit crime for instance:
1. When they are at highschool I believe he's the reason why our MC suddenly felt sick in the exam.
2. It is being implied that he killed his older brother.
3. He switched our MC's supposed to be career
4. There's also an implication that he put an anti-coagulation substance in the blood bag which is a very dangerous thing to do as the patient is sick and has hemophilia, experiencing pneumonia and in need of surgery and Lee sangmin knew how grave the situation will be if he succeeded.
5. And the recent update he drives his car and hit our MC just so he could perform the supposed surgery.
All in all his way of thinking is warp and he has done many immoral things that I already considered him as a murderer even though all his plans fail due to our MC'S halo but still he has the intention to hurt/kill someone or use someone just to achieve his goal

It's refreshing to see half siblings with good intention I mean most manga/manhwa/manhua I've read there's always a conflict like the sister being a b*tch or the brother a jerk but here you can see that vent though they are only half siblings they accepted her existence and welcome her with enthusiasm
(๑•ㅂ•)و✧
Lol that's why you shouldn't try to help people coz IDK maybe they are super strong or have OP powers and you're just in the way for them to shine right? It's their moment so all we have to do is leave them and take care of ourselves. So next time we see someone that could may be in dire situations just leave them alone and don't give a fuck so everyone's happy