Object Realms is a power-system style in LitRPG and progression fantasy, the engine a series runs on. Here are the 1 series we've reviewed built on it, best first.
After waking in a strange medieval village, Dallion discovers he is awakened: able to enter the tiny pocket-realms that exist inside every sentient object. Defeating a guardian mends or upgrades the item. A zero-to-hero isekai following one young man from confused newcomer to a figure whose choices will shape the fate of entire nations.