The body he held back was astonishingly light and the extent
of the blood and Life flowing out was undeniable. The skin was
whiter than marble and there was no sign of those shut eyelids
lifting. Scanning his eyes over the entire body, he held his hand
over the wound that seemed the deepest, the one at the flank.

“System Call! Generate luminous element!”

Gathering the three generated luminous elements on the
wound, he next converted them into healing power through an
art ritual. He released his hand just as the charred wound began
to close, bit by bit, and carried out the same treatment on the
wound at the left shoulder. Normally, catalysts such as «sacred
flower orbs» were necessary for generating luminous elements
which consumed much sacred power from the surrounding area,
but they weren't now. Sufficient Life extracted from the five
knights by the Blue Rose Sword had transformed into sacred
power and had accumulated in the air.

(Alicization Rising, 268)