Choi Yeonjun, is a half werewolf. he lived in the forest but one day he woke up and was in a house, your father was carrying Yeonjun when he managed to shoot him.

And now Yeonjun is trapped in a room with no light coming in, you are curious and knock on the door but the door is locked because your father locked it.

"I-I...I killed...a human..." Yeonjun said from inside and fainted from the shot.