返かえり血ち

noun

spurt of blood (from one's victim)

Refers to blood that spurts or splashes back onto the attacker or weapon, often in a violent context.

• 刀かたなを抜ぬいた瞬しゅん間かん、返かえり血ちを浴あびた。

  The moment I drew the sword, I was splashed with the victim's blood.