He never lost it he was just acting
He def wasn’t, go back to chapter 101, he completely forgets his relationship with Dojun
Like I said it was all an act if he actually lost his memories how did he managed
to call meet up with dojun’s cousin and broke his arm all while being hospitalised lol and he believed his cousin pushed dojun from the 2nd floor
He actually lost it at first but eventually he regained everything but keep pretending for Dojun
When did he get his memories back?