I Became a Tyrant's Maid

When Lee Chaerin kicks the bucket, she's whisked into a dark fantasy novel as Rose Estania, a chambermaid at the mercy of the tyrant crown prince, Kalix Forsman. Armed with nothing but her real-world hotelier skills and a diary from the real Rose full of cryptic hints but no escape route, she's forced to navigate a dangerous world teeming with Kalix's enemies. Can she keep his wrath in check, evade death, and find her way back to reality before it's too late?

Your Highness- That is absurd!!

"Your Highness, did you just cough-!!!"

I'm doomed! I've been transmigrated to another world! As an extra chambermaid from a 19+ impoverished novel from the early 2000s! For now, I'm trying my best not to upset the male lead's temper so I can survive and return home...

"Your Highness! Please have mercy!"

"Your Highness! That is such an absurd thing to say!"

"Could you please stop with that damn antiquated language?!"

Seems like the etiquette here is a bit different from what I know...

Anyway, after defeating an assassin and taking an arrow for him, I feel like I've become somewhat closer to the male lead.

The ominous journal that seems to understand my words, and the male lead, who orders me around, seems a bit fishy too. Can I survive here and return home?