Hoshino's art received mixed reviews. According to Casey Brienza of ANN, as of volume twelve, the battles were "practically unintelligible" yet liked the rest of the artwork. She described Hoshino's drawing style as the "aesthetic yet dynamic, superbly beautiful yet super-violent" style made famous by female manga artists arising from the late-1980s and early-1990s "dōjinshi" subculture, citing Clamp and Yun Kōga as examples. Brienza also talked about Hoshino's character designs, believing fans of both sexes would find them appealing. Douresseaux called Hoshino's art "highly stylish" and reminiscent of work by Joe Madureira, Kelley Jones, and Chris Bachalo. Describing her backgrounds as eerie and Lovecraftian, Douresseaux wrote that Hoshino made appealing scenes that combined both gothic and violent elements. Brian Henson criticized changes made to the Viz Media version, such as the replacement of Japanese sound effects with less-appealing ones and awkward translations of character names.