Iām bad at organizing my ideas so this spoiler will be a bit messy. So basically Aira manages to seduce Oscar, Cain(the bro) and the prince(Asher). Asherās really sweet and heās by far one of my favorite male leads but it was annoying when he mistakes Aria for Millie during the beginning and sends gifts to that b.
Anyways, Oscar has an older sister who likes the prince or at least likes the benefits and she doesnāt approve of Oscar being with Aria cuz of her ādirtyā blood and threatens Oscar to not get involved with her. In order to protect Aria from his sis, Oscar decides to cut ties with Aira and gets engaged with Millie. But this backfires when Oscarās sis gets put in her place by the prince and gets rejected lol. But because she got rejected she along with most of the nobles come up with a stupid plan to rebel against the country and gets engaged with the king(Lohan) of the neighboring country. They think that their plans are going well but what they donāt know is that Asher and Lohan are childhood friends and this whole marriage thing was just an elaborate trap to get rid of the rotten nobles. During this time Aira also manages to get some power by investing in businesses that she know will be successful (past life experience) and becomes the famous āInvestor Aā.
(This is out of order but I forgot to mention that Millie pushed her father off the stairs in order to frame Aira (but Prince saves her) and he basically becomes a vegetable)
Ultimately, the prince solves the rebellion and all the nobles are beheaded (bad nobles = ded) except of Millie and Cain because of Airaās request(and also Oscar). Cain becomes a servant to the castle and Millie becomes a maid of Airaās maid lol. Of course Millie is salty about this and Aria encourages her to poison the maid but instead Cain was the one who drank the poison and dies.(Cain = ded) Everyone thinks that the target that Millie wanted to poison was Aria so she also dies. (Millie = ded) the father commits suicide cuz he has nothing left in the world. (Count = ded) Ariaās mother marries Ariaās biological father who is a noble in Lohanās country and her grandmother was a royal in Asher kingdom (royals have powers btw so Asher has the ability to travel through space) in the past so thatās why Aira has hourglass powers. (Donāt worry Asher and Aira are not blood related) Aria and Asher gets married and the end.
Sorry if the spoiler was confusing since I just wrote what popped into my mind lol

. The novel is good so go check it out.