Kind of a dick move to screw over an entire fief to inconvenience one person. Plus, if the blackwood is valuable (and I assume it is) someone else will come along to buy it up eventually, so this is just a temporary annoyance to a noble that can cost a lot of commoners their lives.
Also, "this is a lifetime contract". "Ok, good, you can keep the place heated then."
its nice that this is set after the event rather than it being a time travel story. Corona Kids yall keep on picking up the best manhwas and im here for it!!! <3