The top probably got caught leaving or kept over because the other went missing. He probably did show up, just too late. I bet the reason he's lived such a shady life is because he never went back to the orphanage and has been looking for Mido since.
The situation is horrible, but the dude was just a kid. He was doing the best he could with the situation given. Now he's paying the price for not being as "cool" and all-knowing as the other one perceived him to be. The whole situation bites ass.
