Pure Hearted

Pure Hearted is a unit category in All Star Tower Defense that groups together a large set of characters, including Koku (Instinctive), Ruffy (5th Form), Humble-Swordman (Awoken), and Borul variants. It matters because several leaders give Pure Hearted units an attack boost, ranging from +10% to +20%, making the category important for building stronger team synergies in raids and higher-difficulty modes.