yo! Spoilers ahead but I read the novel and OP was trying to say that this whole Claude amnesia part was supposed to be over one season ago. Right now we are in uncharted territory. Spoon (Manhwa illustrator) has changed the trajectory and none of us know what’s going to happen anymore since it’s no longer following the novel ...
i just checked it https://www.novelupdates.com/series/suddenly-became-a-princess-one-day/comment-page-2/?pg=8
Status : Complite Σ(  ̄□ ̄||)
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This isn't really a spoiler but SOMEONE SAID that novel is already finished, it finished when lucas came back from the tree. And THIS INFO CAME FROM SOMEONE ELSE that IN THE NOVEL Jeans (Jeannette) hated or is jealous of athy and she didn't like that other noble ladies shipped athy with whiteboi. There was a time where lucas and athy danced together while whiteboi watched then Jeans said to whitie that athy and lucas looked good together... this made whiteboi mad and told jeans that she was clingy when they were children until now (this is kinda what he said i dont remember correctly).. So Jeans got hurt or sad then when for HOTDADDYMCRISPYDADDYCLAUDE for comfort then she revealed her eyes to claude and said "Father" or something. HOTDADDYMCRISPYDADDYCLAUDE hot mad and said that Jeans wasn't his daughter and its only athy ......
Another ending FROM ANOTHER SORCE was that Jeans and her Dad was banished from the empire...
ANOTHER ONE (lmao sorry) some people say that DARK CLAUDE was a reincarnation of THE FIRST FIRST PRINCE, the one from lucas flashback where we see him adult like with long hair. The prince was actually like a fan of Lucas and wanted to impress Lucas but he didn't have like a strong magic so he studied black magic.... later own he possessed THE DARK CLAUDE FROM CHILDHOOD (u know the scene when smol Claude was calling his bro)
sooo yeeeee im done...
Note that this spoiler that i said might change (specifically the one where Jeans was Evil cause she's actually pretty nice in the manhwa)
:)))
https://woopread.com/series/who-made-me-a-princess-novel/chapter-123/
u can read this its from the part when lucas comes back from world tree
and as i know and heard 1st mage like lucas teacher or idk if it was first prince of obelia (when Luca said: that this prince is useless) that he is Anastacius JAnnetes father and Clauds brother . so Lucas Teacehr OR 1st prince is now Anastacius ( was in novel or smthin like that) but in manhwa Anastacius is Anastacius with all of his memories

any one have spoilers what gonna happen on the next future chaps? spoil me please because for some reason my blood is boiling..... spoil me pls