In a twist of fate, MAPPA would also inherit Vinland Saga 's second season from Wit Studio —the same studio that animated the first three seasons of Attack on Titan . Hayashi recalls Hayashida giving MAPPA feedback, saying those unrestrained details weren't just embellishments—they're part of what makes Dorohedoro Dorohedoro . Despite all the back-and-forth, Hayashi says both MAPPA and Hayashida were thrilled with how Dorohedoro season two turned out. Just as the decision to produce Dorohedoro season two was essentially a given after season one, (K)NoW_NAME's return was locked in early in development as well. When asked what made Dorohedoro such an appealing project for MAPPA to return to adapt its second season, Hayashi says the answer was simple: it was unmistakably Hayashida.