Seriously it was mention in the early story that his father is in jail and he's living with his mother. Also if u're think he might have killed someone the possibility is his mother. And he's hiding in the bunker since he doesn't want the mc to catch on to his lies which will prevent her to escape and be suspicious
Mind you, there was a comment asking who put the condoms in her bag and why the keep showing them???? And I was like?????? Is that what you are confuse about? The answer is right there, remind me to the jjk meme fandom, Read people read.
LITERALLY BROO.
Did he kill his dad and is hiding on the bunk?