ML's family made him marry FL. He didn't want to so he didn't treat her in the best way. Then he met some girl he fell in love with and they both made Fl's life a hell for 4 years. Now he's back 3 years in the past and he knows the side chick is a bitch and wifey is the only true one.
In the last chapter MC became one of the concubine's friend (the girl was great) ML became jealous, told MC he was being disrespectful... MC was made and told him something like if you can have a harem then why can't I have a friend? They quarrel a bit then MC is like if you really love me then J want you to disperse your harem. ML says it seems like a loved you a bit too much... he literally chocked MC. He was gonna kill him, the dude literally did 't want to stop. Then he ordered his guards to not let MC out. Ge slept with one of his concubines some then disperse him harem but still refuse to apologize. At the end they are rolling in the sheets like nothing happened at all
he kills every single woman that gets a few feets near him but he falls in love with the MC at first sight. I think she told him some cool quote from the internet and the guy took it to heart. One of my favourite scenes is when he's courting her but she just started liking him and he said you're gonna marry into my house and she's like nope then he said, okay then I'll marry into this house and take your surname. Keep in mind he's a prince. So a few months later when they started dating he started spending every night at her couch and she's like don't you have your own house and then he's all serious: but if I'm gonna marry into this house I have to get used to it. MC was so surprised and touched
there's this moment when she succesfully created her own territory with demons and humans living together in peace. The four countries tried to take her down so they had a war. And there was this pair of twin demons who followed her from the start. They were outnumbered and the youngest brother had beasts gnawing at his flesh while trying to protect the dying older one. And while he was dying he remembered how they first came to this land thousand of years ago and joked about who should be the boss and finally decided on the older. While he was dying his last thoughts were: brother, how about in the next life you be the youngest.
there's absolutely no schemings or suspense. The MC has all those super powers that made her able to solve the word's problem immediately. She's a teenager who can fly on a sword and kidnap people and uss bombs without restraint. She's too much OC and it doesn't even go with the host or the word.
The romace disappointed me... A LoT. I'm a fan of doting ML who can do anything for MC. ML doesn't give a sh** about her. And she keeps following him because of the quests. He only start to care at ths very end of the arc and the romance is not even that developed. I mean... you can't feel they like each other.