Thanks for the chapter!
See, this is what pyromaniacs turn into when they die.  Also, shouldn't it be the sword was blessed by a monk?  After all, only evil monks do curses while good monks do blessings.  So what is Sei Mei, an undead monk, lich, something else?  For a cynic Dororo sure has a big heart.  Wonder why refuse to let people leave.  Can't leave corpses exposed as could generate disease and pests, and if kill them still lose a worker.