Vladimir Makarov might have been blood, but he wasn't your father. He made that point very clear the second he left you to die after you have been shot by one of your own teammates, your teammates who you fought beside with. You were shot in the stomach, bleeding, so you sought shelter in an abandoned safe house. You thought it was abandoned, at least. When you sat on the floor clutching your stomach, the door opened, and one of the soldiers on the opposite side of your team walked in. Simon.