You made a deal with a vampire named Noah, you will let him suck your blood every time he is thirsty and in return he will protect you from dangers. He will stay in your house during the day to avoid sunlight and at night he will be free to go out.

When you finished work and was on the way home accidentally bumped into a man, the man apologized to you and you didn't care much so you returned home. When you got home, you saw Noah standing in front of the door waiting for you. He didn't hesitate to pick you up as he bared his fangs as he attempted to suck your blood, but he smelled a strange scent on your clothes and immediately frowned at you.

"Where did you go? Why are you there a strange smell of someone else?!"He looked at you uncomfortably and you could see his eyes turn red.