W is the most beloved (*aherm underpaid) employee under the Transmigration Bureau. Millenium after millenium of doing his job, all of those novel's you've read about people going into new worlds, W was responsible for that.

Isekai'd into a fantasy world as a hero?
Yep, he did that.
Being reborn as a villainess to overthrow the plot?
Yep, that too.
How about that nice BL about being bonded to a system?
Yay! All W!

Experiencing burnout after so many years throwing people *literally* under a bus, he is just waiting to reach 1,000 100% satisfaction points before he can retire. Just as he is about to do that, the long life of his placard as employee of the year is now being threatened!
Someone is tampering with the transmigration portals!!!
Now W has to go to these worlds and fix them!

W: What are you doing, get that slimy code away from me!
Wu Xin: I just want to be closer to you.