【The God’s Knights’ mechanized hearts are made of “shape-memory alloy” Wapometal】
The reason the God’s Knights can regenerate likely lies in these mechanized hearts.
These hearts were probably created using technology from the Great Kingdom, and what’s being used to replicate that technology now is likely “形状記憶合金ワポメタル→shape-memory alloy: Wapometal.”
As the name suggests, this is a metal that returns to its original, “remembered” form no matter how much it’s damaged or deformed.
Because this material is being used as their hearts, the “hearts” of the God’s Knights are essentially governed by that same principle.
So the moment their will starts to deform — even slightly — into a shape of rebellion, it’s automatically forced back into the shape of absolute loyalty to Imu.
In other words, even though they’re supposed to be among the highest-ranking “gods,” their very hearts are physically bound — making them, ironically, the most restricted slaves of all.