In a world where magic and science intertwine, Rayotte Steinberg, a solitary 'tactical sorcerist', battles monstrous former humans. These creatures transformed by abusing forbidden 'magic' threaten the realm. Rayotte's protective 'mold' restrains his humanity, while his destructive 'staff' wields explosive power. Every spell cast inches him closer to becoming a monster, yet abstaining means death. Amidst relentless clashes, he must confront a haunting sin from his history.