Dot this have a TV adaptation? Am I confusing this?

There is. Two seasons. Starred by Masuda Takahisa as Amakusa and Ukisho Hidaka as Shiki. Some of the events sequence has been changed to make the story flow better (in my opinion) for the drama, but his power is weaker in the drama than in the manga, so it's a bit disappointing (in terms of power) but I like the drama overall

Sorry meant to like...