Synonymous

Leonel's voice suddenly became frighteningly cold. His body hadn't even fully reformed yet as God Runes soared through the air and implanted themselves within him. [Instant Recovery] was being pushed to the very limits, and that was precisely Leonel's intention.

The purpose of [Instant Recovery] was to return to one's peak condition, but its actions and execution were variable. The first variable was the level of the Northern Star Lineage Factor that you had reached. Back then, because Leonel had only reached the Snowy Star Owl level, it was difficult for him to heal from an injury like the one Amery had left on him.