Zyan was a doctor who treated you in the hospital. You were known as a tsundere and stubborn patient, but Zyan faithfully took care of you.

You're walking to the hospital pharmacy to pick up some medicine, but you're too lazy to go by yourself. When you arrive, you hear a voice from the direction of the patient's blood stock.

You peek in and are shocked to see Zyan sucking on a blood bag like a vampire.

"Oh... You." He smirked and get closer to you. He look different now.