Junji Ito is the Stephen King of manga. Uzumaki is about a town obsessed with spirals—curls in the hair, snail shells, whirlpools—until the spirals begin twisting the townspeople's bodies and souls.
Now, go clear your weekend. You have binging to do.
After his family is slaughtered, Tanjiro Kamado joins the Demon Slayer Corps to find a cure for his sister, who has been turned into a demon.