Here's a revised version of your text with grammar and flow improvements:
[Completed. Waking up user.]
I open my eyes and see the message in front of me.
"How long did it take?"
[User has spent 10 seconds in sleep mode.]
10 seconds, huh? At least I have time to get dressed for my new "work." I quickly put on my black suit, after all, I'm now a butler for the house of Aragorn, a Duke's household no less. It's weird knowing my boss is literally a pillar of the empire, but it is what it is.
I dash out of my room and head toward my mistress's quarters. I'm already about ten minutes late for my duties. If I take any longer, I might lose a few fingers. On my way there, I can't help but marvel at the beauty of this mansion. Seeing it in person is something else compared to the vague memories I have. Every corner screams wealth and power. Then again, I wouldn't expect anything less from a Duke. But I can't get distracted, I need to reach her before she gets angry enough to make me want to kill everyone here.
Knock knock.
"You may enter."
I step into the room. "You're late."
Ah yes, there she is: Lady Kira Aragorn, with her jet-black hair and piercing green eyes. A beautiful face, no doubt.
I bow deeply. "I'm truly sorry, my lady. I will make sure this never happens again!" My voice sounds too cheerful. I should've suppressed the smile, too. Oh well, too late now.
"..."
Is she mad? I hope not. I don't want to waste my time restarting for no reason.
"Your free today."
"...huh?"
"Didn't you hear me? Your free today, I'm giving you a day off."
"Are you sure my lady? I'm your personal butler it's required of me to serve you-"
"Who do you serve here Aran?" That's new, she never did call me by my real name.
"Of course it is you, lady Kira."
"And what is my order?"
"To take the day off of course but..."
yeah the way she's looking at me isn't good I should just go.
"Of course lady Kira I be leaving now! Please tell me I'd you need anything."
With that, I leave her room, or is it her office? Considering the mountain of papers and the massive desk, it's probably her study room. Not that it matters. She's acting weird. The Lady Kira I recall from my memories was a total brat, sadistic, arrogant, and spoiled. And yet this same sadistic woman just gave me, a dark elf born and raised as a servant, the day off? whatever I don't care.
Lets just see around the mansion. Maybe there is a clue about her.
*** Pov Kira ***
HOLY SHIT. I'M REALLY IN AN OTOME GAME?!
My hands grip the edge of the desk as I struggle to keep my breathing steady. This can't be real. Out of all the characters I could've been reincarnated as, why did it have to be her?! Lady Kira Aragorn. The villainess. The most arrogant, cold-hearted, doomed character in this entire story.
Whoever sent me here clearly has a twisted sense of humor. Did I wrong them in another life? Because this feels like punishment. The worst part? I know exactly how this ends. Kira's intelligence, her only redeeming quality, makes her so arrogant she doesn't even plan for her own defeat. The heroine and her love interest crush her like it's nothing.
And this isn't just any otome game. It's one of those cliché stories where the heroine is a commoner who gets a scholarship to the empire's most prestigious academy. She charms everyone with her "pure heart" and wins the affection of the crown prince. Of course, the villainess (me, unfortunately) becomes the target of everyone's hatred.
I hate this game so much. Why couldn't I have been reincarnated into something better? Or at least as a side character who could live quietly on the sidelines?
(Author's note: I'm not creative enough for that, lol.)
Okay. Calm down, Alex, no, Kira. The academy arc doesn't start for a few days. If I play my cards right, I can avoid interacting with the main cast entirely. Forget the prince, the heroine, and all that romance nonsense. I just want a quiet life. Is that too much to ask?
*knock knock*
Damn it. I don't have time to panic. Acting mode: activated.
"You can come in." Nice needled! I should maks something up to act more of a cold beitch after all I couldn't let anyone get suspicious of my personality change.
"Your late."
Wait is that...
"I'm truly sorry my lady, I well make sure this well never happen again!"
Oh no. I completely forgot about this guy!
"..."
what should I say?! He's the strongest npc in the game! Or I think he is. In the game he always broke the 4th wall with the player whenever they restarted the game to play another route. He only talks to the player one time at every play through and he always commented on they love interest of the previous play through and say some disturbing shit afterwards. Even the villainess was always uneasy around him! I'm fucked if I'm too mean to him, now that I think about it i never seen villainess ever order him too much either like there was a limit to what she could order him.
"Your free today."
"...huh?"
What do you mean huh?! Just leave me alone!
"Didn't you hear me? Your free today, I'm giving you a day off."
There. See? I'm such a kind, considerate boss! Please don't trigger a death flag.
"Are you sure my lady? I'm your personal butler it's required of me to serve you-"
"Who do you serve here Aran?"
hopefully this doesn't trigger a death flag.
"Of course it is you, lady Kira."
"And what is my order?"
"To take the day off of course but..."
I gave him a anger look... please no death flags!
"Of course lady Kira I be leaving now! Please tell me I'd you need anything."
"..."
*click*
His gone! Yes! Now I don't need to see that creepy smile for a... day... I still have to goto academy with this guy... God why! I can't even cancel the academy because it's mandatory for all nobles. I'm so unlucky.
[System activated.]
Huh?