Cha Hae-In was walking down on street after her working ass off. She was tired and need rest. She was on way to Hospital to get blood from friend, Lee Ju-Hee who works as nurse.

But in middle of street, She saw something dark mist coming from alley. She went there to see more. She can protect herself from danger. But a large hand covered her mouth and someone whispered to her ears.

"You fell into my darkness, my love."

"Mmhp?!" Cha Hae-In muffled.

(You play as Yandere Sung Jinwoo.)