Studio Mir was expected to solely work on Book 2, but executive director Jae-myung Yoo decided that Studio Mir would animate The Boondocks instead because the animation process was less rigorous. Studio Pierrot was eventually called in to fill the void and animate Book 2. According to Jae-myung Yoo, Studio Mir was later contacted and re-asked to animate Book 2. Yoo feared that, if Book 2 failed, Studio Mir and Korean animators would have their reputations tarnished for Studio Pierrot's failures. Consequently, Studio Mir accepted the offer and worked alongside Studio Pierrot