<spoiler>
(I don’t remember the plot super clearly so bare with me)
One day when Agnes was going to a fan cafe that she planned for Kylo, Raymond was following her and she got hit by a carriage and got very injured. On the verge of death Agnes recieved some super powers or smth and she decided that she was going to use it to seal the deadly monsters herself and sacrifice herself for everyone instead of Kylo. When she woke up, Raymond fell in love with her and became super delulu and obsessive he thought she was playing hard to get. Agnes when she woke up pretended she forgot Raymond completely, later on Raymond found out she was faking that she forgot about him and thought she did this because she loved him (it was really because she wanted to focus only on Kylo)
Her brother kept trying to force her to be with Raymond until the end. Agnes wanted Kylo to be her royal guard and her brother made Raymond her guard too but Agnes avoided him.
Agnes ends up making a fake magic doll of herself and climbs up the mountain and sacrifices herself to seal the monsters away. Everyone is distraught, at this point Kylo is in love with her but always felt like he was disgusting and wasn’t good enough for her. Agnes wrote a note saying she loved him before she died on the mountain and he found it and realized.
Both Kylo and Raymond were sad for a while, Raymond almost committed sewerside so they had to tie him down and drug him. Kylo climbed back up the mountain and saw a statue. Kylo was wearing a necklace Agnes left behind (I think) He was about to commit sewerside but his blood hit the statue (or the necklace don’t remember) and turns out it was some mystical god trapped there
╮( ̄▽ ̄)╭ the mystical God said he would grant one wish and Kylo wished for Agnes to come back. Agnes revived and she instantly told him for them to get married.
The brother tried to meddle and Raymond tried but ultimately everyone accepted it especially since Kylo saved Agnes’s life (they over exaggerated what Kylo did saying he beat up 12 monsters or smth to save her)
And that’s the end
If you’re like me and really like the story but don’t want to wait for chapter updates you should read the novel, it’s fully translated! (I will say the translation isn’t thr most clear but it’s enough to understand and it’s still good.)
The link is here https://www.novelupdates.com/series/princess-who-hides-her-fandom/
(You have to create an account to access the chapters)