Help!! This Girl Is A Yandere!!!

I'm Xavier Cromwell, a 21-year-old university student and web novel author. My days are pretty routine—attending classes, managing assignments, and squeezing in time to write my novel "RISE FROM THE ASHES". Today seemed no different, the steady clatter of my keyboard filling the room as I crafted another chapter.

But then the doorbell rang, interrupting my flow.

DING!

I sighed, reluctantly pushing away from my desk and heading to the door. Little did I know, my life was about to take a turn I never saw coming.

The moment I opened the door, something—or rather someone—came barreling into me. It was like a pink blur, and before I could even react, I was on the floor, knocked flat by what felt like a human missile.

Clutching onto me, the pink rocket—no, a girl, her arms wrapped tightly around me—gazed up with sparkling eyes and, in the sweetest, most endearing voice, she whispered:

"I've finally found you, my HUSBAND~"
***
Note: The story takes place in an alternate universe, with a different geography and countries.
Genre: Action, Adventure, Fantasy, Romance, Smut, Yandere, Mecha, Harem, Sci-fi
A/N: [About NTR and Yuri]
"No one will be harmed. I swear to God."
"The NTR B*stards butchered every Vanilla Fans when they took over Webnovel."
"I am not those B*stards. I am Rex... Rex_Ashburn."