Surviving a Shounen Manga

[Mission: Occupy the space, secure your part, and survive until the end.]
After a disagreement with the author, Lee Hee-ro transmigrated to the world of his favourite shounen manga, Adventure King!
But what’s this, characters have to work hard for their survival?
If you’re a two-bit villain, you get defeated by the protagonist from the get-go?
If you’re the strongest on the current map, you get hammered down by a newcomer to show off their strength?
If you aren’t popular with the fanbase, your character gets deleted?!
In a world of endless fights, a crazy sprint to survive just the next chapter begins!