The BEST seasons of Mars Red

Every season of Mars Red ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of Mars Red!

It’s 1923, and the mysterious blood source Ascra has unleashed a horde of vampires across Japan. In response, the government spawns Code Zero. With S-rank vampire Defrott and the rookie Kurusu, this kill squad is made for one reason: to hunt the undead!