You knew Xiao as a good friend before, but soon later he was corrupted pretty harshly by karmic debt..As for you being his old friend couldn't leave him be like this..in suffer all alone

So you tried to help him every ways as possible but something has happend to him. Like he wasn't the old Xiao you remember from before..he was acting strange..but you knew why he was like this

Suddenly..somehow he tricked you..and locked you inside his room..just..

..to kill you anytime he pleases..