yo can someone please suggest me a romance, straight or shonen ai, where the mc disappears...

I have a feeling you've already read these since they sound so close but murderer Llewellyn and solo for two

I dropped both

Damn I understand solo for two but dudeeee you're missing on murderer llewellyn I promise u!!!

Just Twilight
My Reason to Die
Boy Girlfriend
Unlovable Replacement
Hello Baby!
Reunion (on webtoons)

I don't remember the title name, but a good one is where the female lead is very powerful. She interns in the office of the male lead and she is a very good worker, so good that people see her turn somewhat into an alien-like because of how much work she is able to accomplish. Anyways, she is level headed, and plot spoiler, but when her internship is over, she chooses to leave due to learning that was not what she wanted to do, despite the typical plot where the male lead tries to woo her to stay. She is firm and walks her own path and the male lead instead choose to leave the company to chase after her. Let me know if you know the name of this manhua.

I got so far there but still couldn't see a hint of romance or anything, I got so bored I stopped after forcing myself to read Can you spoil me at what point there's some visible romance