
Wait I'm confused. Didn't the prince want to kill the emperor for revenge against his mother?

Not at all! His father wasn't the culprit of Linden's mother and sister's death!!! It was the third prince's (cute blondie) mother and uncle the ones who pushed them away from the Royal Family which led to his mother to commit suicide. That's why Lise is thinking of how to prevent Linden from taking revenge, as he would have to kill everyone from blondie's family and faction including blondie himself (as blondie wants to protect his mother by ascending the throne).
In the past, Linden actually killed everyone but Lise knows Linden and his half-brother actually like each other and get along well too so she doesn't want Linden to massacre everyone from the third prince's faction (as shown in a flashback, killing everyone made Linden lose control and fall into the abyss of depression)
You can try re-reading if you wish, I hope my explanation wasn't as confusing (●'◡'●)ノ

Yes... the emperor actually loved Linden's mother more than the blondie's mother (the empress at the time)... that's why she wanted Linden's mother and the emperor to be apart. She knew that the emperor would probably make Linden the heir because he loved his mother...
I forgot his name that's why I keep calling him blondie but he's good, in the past he was Lise's only friend (before Linden killed him) ٩(๑❛ᴗ❛๑)۶

It's nice to see that despite the cold and harsh attitude that Hye-Sung portrays that makes people annoyed at him is some sort of form for a defense mechanism and that inside he's just insecure, afraid, stressed, and even pressured but that he still feels guilty and he really does love his son. It's just harder for him to express himself truthfully

Rather than his sexual identity, I think it's his whole identity that Hye-Sung has struggled with. Aside from that I definelty I agree with him being emasculated. Regarding him being projected with misogynistic tropes I think I would have to re-read the story to refresh my memory on all the examples in order to voice my opinion on the subject.
Typically omegas are viewed as a mother who takes what people believe to be the woman's role in parental figures. As they (omegas) are viewed as mothers there are a lot of beliefs that taking on the mother role isnt as masculine or there is nothing masculine about it when, in fact, they are wrong. Both genders can be masculine and feminine as parental figures and can take on either role.
I can see what you're talking about in your comment. It's become somewhat normalized how there is a distinct treatment between both male and female and that there are some, not all, who will not voice out how rape is differently treated from men to women.

Um...its fictional?? This manhwa is an ABO webtoon. If you have an issue with hyesung being feminine or emasculated, maybe just stay away from the genre altogether. Im sure there are tons of manga out there that would suit your preferences. This work is fictional and the author has full creative freedom to write whatever they want as long as its not illegal/harmful to anyone?? There are literally hundreds of thousands of works like this out there, are you gonna call out every single creator for writing ABO or anything u dont morally agree with? Literally get a life and mind ur own business, not everything out there is for everybody, thats why tags and disclaimers exist. Its a pretty huge genre and many ppl out there read it (whether u like it or not). There are tags for a reason so people know what they’re going into when reading a new story. its a love story. What do you expect? He gets “raped,” they go on separate ways, end of story?? Idk what you were expecting tbh. If you’re so pressed about the non-con, you coulda just stopped reading it then
It's been a year and no one has commented after me nor has it updated. I'm surprised