It was Woo Hak that took the blow to the back of the head from the chair his father wielded, he did this to protect…
Oh I rewatched the ep and i see now I missed the part where he blocked him mann that lowkey ruined thr show for me now that i know bo geol is the main lead i liked woo hak way better 💀💀💀
Woo hak is for sure ki ho it is confirmed in the latest episode when he is telling the story of how he got amnesia and I believe this takes place after mok ha has gone missing