
alright since you asked for everything that happens, i'll detail all the spoilers. if you want me to go into more detail, just ask and i shall spill.
starting from the latest chapter where she arrives at the casino:
(major spoilers, duh)
- With her new funds, Aria sponsors a bunch of young businessmen who she knows will succeed in the future. She becomes known as "Investor A" as she can't reveal her identity due to her reputation. These businessmen create a new party that rivals the Aristocratic party. She creates a school later to educate more people who want to become a successful businessman and be sponsored by Aria in the future. She later becomes the empire's star and all the wealthy businessmen are extremely loyal and indebted to Aria.
- Mielle tries to insert herself into the newly booming economy. Wives don't like her and Aria steals the show because she's way more intelligent and well versed in economics.
- Emma, the head maid and mother figure of Mielle, basically does all the dirty work for Meille, so Aria needs to get rid of Emma before Emma does anything to get in the way of her revenge.
- Berry was ordered to poison Aria's tea. Aria obviously knows this but offers to help Berry and frame Emma instead.
- Emma becomes the main perpetrator of poisoning Aria and gets sentenced to death. Mielle becomes extremely depressed and shocked and won't come out of her room because she's crying all day.
- During all this, she is in contact with Princess Isis, and they both hatch a plan to get rid of Aria again by pushing Count Roscente off the stairs and frame Aria as the one who did it.
- Aria reveals that she is Investor A and because Isis is now engaged to the king of Croa and Aria is also revealed as Asher's lover. so that makes Aria the crown princess now.
- Okay so you know how Aria has the hourglass as her special power right? Asher has the power to move through space, which explains earlier how he brought Aria to a random street with no people. by this time, Asher and Aria are already in love with each other. Asher gives Aria a bracelet and you'll understand why it's important later.
- Back to Mielle pushing her OWN DAD off the stairs, the Count tries to grabs Aria's wrist but rips her bracelet off instead. This tells Asher that Aria is in danger so he moves through space, grabs Aria, and skedaddles through space again. Mielle is like, wtf??? but still frames Aria even though there's NO evidence
- Asher brings Aria to the border of Croa, the neighboring kingdom, and pays in credit so that they'll have evidence that Asher and Aria weren't at the scene during the time Mielle pushed the Count off the stairs.
- the count is in a coma, and then when he woke up, he's paralyzed and can barely speak.
- Mielle gets busted and at the same time, the aristocrat Party is making moves to take over the empire.
- Croa sends an army to the empire and hides them in the houses of the aristocrat party houses. the king is actually on the side of the crown prince and what he actually ordered the soldiers to do is waste as much money as possible so that the aristocrats' money drains away. the counts and dukes are worried but they don't do anything because they think that the king of Croa and Princess Isis will help them.
- They all get caught and sentenced to death by treason. Except for...
- Mielle and Cain (Cain knew all of Mielle's plans to kill Aria btw) don't get executed because Aria covers for them and because at this point, Aria is the star of the empire, wealthy, and the crown prince's lover, everyone believes Aria.
- Mielle gets put in house arrest and Cain becomes a civil servant. Both get demoted to commoners.
- Aria was once known as the evil girl of the empire and Mielle was the saint, but now their roles have reversed.
- it's revealed that Aria has powers because she does have some royal blood in her. Her father is actually a noble from Croa. Isis calling Aria a dirty slut commoner just made her look even more like a clown
- Mielle begins to wonder why Aria is being so nice to her after all the terrible shit she's done.
- Mielle starts to think that Aria is a saint and regrets all her evil deeds to Aria.
- Mielle becomes a maid.
- Mielle can't stand the treatment because she used to be spoiled as a noble and everyone around her sees her as an evil lady who conspired against the saint Aria, so they all treat her badly.
- Mielle is especially annoyed with Annie and goes to Aria all the time to complain about her. Aria suggests that Mielle could just use a little bit of this poisonous flower to poison Annie's tea.
- In small doses, it'll just cause a stomach ache and fever or whatnot, but because Mielle is truly an evil person, she puts way too much, enough to kill someone with a single sip.
- The cups get mixed up and it ends up in front of Aria. Aria gets up and the Cain sits in her seat. Cain ends up drinking the poisoned tea and dies on the spot.
- Mielle is like "you betrayed me" and Aria is like "you're the one who put too much lol"
- Everyone thinks Mielle is delusional so no one will believe her if she says Aria is the one who made her do it.
- Aria reveals to Mielle in her jail cell that she was planning her revenge all this time and it was all her doing.
- during this, Aria's mother divorced the Count. The Count later committed suicide because one of his children committed vile acts and sentenced to death while the other was poisoned by said child and died. The 3 people who made Aria's life a living hell in the past were finally getting their karma served.
- Mielle gets executed and Aria gets her happy ending with Asher.
- Aria gets married to Asher and it was great.

okay this is all i know from what was written in the novel about Oscar.
- He continues to ignore Aria until his end. I don't think he's spoken to Aria since the day he stayed at their residence after Isis' birthday party.
- He does this so that Aria won't be targetted by Isis. In my opinion, he does see Aria as a bit weak who cannot fend for herself but that's because Aria has never revealed that side to him. And the reason why she'd never shown her cunning wicked side is that she doesn't actually love Oscar. You might say that Aria was "heartbroken" because Oscar cut off their friendship but Aria was more upset at the fact that she lost a tool to bring down Mielle.
- When Isis and her circus of clowns (the Aristocat Party) get caught for trying to take over the empire, Oscar went to the Crown Prince, Asher, to reveal all of their plans.
- Talk about being a snitch but he does actually help out the investigation. Asher is pretty hostile towards him because of the rumours that he and Aria were an item.
- Oscar stans don't worry, he doesn't get executed like his sister and her group of goons, he only gets demoted to a commoner.
- The novel never mentions Oscar being jealous but I too would be jealous if I missed the opportunity to bang Aria
- Oscar was forced to stay by Mielle's side until she got thrown in prison so yeah. Being a commoner means he's free to love whoever so I'm happy for him for that I guess
- I'm at the part where Aria is having her wedding so idk if we hear from Oscar afterwards but I doubt it since it is the wedding for the future Empress and Emperor. Compared to Oscar, he's a tiny little speck that doesn't exist in Aria's life anymore.
- I'm pretty sure he's just living the life as a regular old commoner if that makes you feel any better
an somelone explain to me what happen in the novel,, all thing that happen please tell it tome