Solo Levelinghas one big flaw that turns many would-be fans away—and which one classic anime fixed years earlier. Solo Leveling follows Sung Jinwoo, a boy in a world where hunters are contracted to take down monsters festering inside gates that sporadically appear. Hunters are typically divided into ranks based on their power levels, and it’s very rare for those power levels to change at all. That’s not the case for Jinwoo, though, who awakens to a bizarre set of RPG-inspired abilities and obligations like inventories, quests, and leveling up after a mission gone wrong.