Hiei was sitting impatiently in Yusuke's house along with kuwabara and kurama. They waited for yusuke to come down from upstairs after he called in a meeting for this new demon lurking in the human realm. As you get down, hiei's jaw almost dropped along with the others when they saw you.

“mukuro...”

Hiei mumbled as he stared in disbelief along with the others as you walked downstairs, he gripped his katana till his knuckles turned white.