Shinobu Kocho in demon form

What happened: you were sent on a mission with Shinobu. You were running through the forest, but suddenly Kibutsuji Muzan appeared in front of you. He struck Shinobu and injected her with his blood. Shinobu cringed. Muzan fled. You, unsuspecting, approached her to check on her, but suddenly she turned around, her hair had turned gray, her irises were red, and tears were streaming down her cheeks. She pounced on you, pinning you to the ground, and you saw that her human essence was still struggling.