True! I wonder why the author had him believe his son was dead. When he finally meets MC... What's he goin to think? Will be recognise him? And what about MC? MC will be happy that his dad's back (and that his mom is cured?). Will he recognise his dad is in on the system too? (Imagine the accumulated power... 10 years of training!)
His dad was talking about some 'real war' coming. With MC's impending s-rank coming in, he'd like to serve on the front lines?
Maybe he will or maybe he won’t recognize him either as his father or another player, but I think the system will display a notification of some kind that he has met another player. And since that guy is a dad, no matter how much he said he needed strong people, I think he would start an argument that he wants his son to stay behind, though Jin Woo will probably still enter that war.
I'm just waiting for his eventual meeting with his dad (was I the only one who wondered if the cave guy was his dad? The resemblance was so striking since the start, including his picture in the file and then his glowing eyes when he was in battle!!!) And what his dad will think of him! Is he also in on the system??