A man who died obsessed with enhancement transmigrated into a trash-tier villain.

The only enhancement content is physical enhancement (experimentation)?
Your body could break down, you could go blind from excessive bleeding, or suffer mutations?
Let’s do it right now!

And with the extra money I make along the way, I might as well sponsor the original protagonist (my older sister).

The moment the hero’s party finds out their sponsor “earned” that money by selling their body(?)—
their mental states will shatter in 5… 4… 3… 🚨