Dura 7 Volume 5

Saurian Demon King lowered his stance and widen his eye as he used a
palm to strike at Izayoi's centre while twisting it to give a spin to it. The
accumulation of experience over the span of many a thousand winters that
developed such a striking method caused Izayoi to feel an unprecedented
amount of pain stabbing at his internal organs.
[Pu.......]
Though Izayoi felt as if his blood was flowing in reverse and the broken
blood vessels caused him to taste blood in his mouth, he continued to
clench his teeth to suppress the pain...