I think the copy cat killer is Barron.. Jonathan went in Barron's house and during his conversation with him, he was already suspicious, Jonathan specifically told him not to call him in his phone number because his phone got smashed. Then later after that Jonathan got call on his phone, in which Kister answered. Then the caller knew that it was Kister. It seems to me that, Barron, "the copycat" knew that Kister is with Jonathan because he is the next victim and would also want to catch him as a copycat. And used this chance to confirm it, through the phone call.
I really loved this manga not until this new update. Maybe it helped that the new chapters were adelayed thus the impact or this whole new drama is lesser. Im gonna skip this and wait for it to finnish. *Holds my heart aghh!!
I think the copy cat killer is Barron..
Jonathan went in Barron's house and during his conversation with him, he was already suspicious, Jonathan specifically told him not to call him in his phone number because his phone got smashed.
Then later after that Jonathan got call on his phone, in which Kister answered. Then the caller knew that it was Kister.
It seems to me that, Barron, "the copycat" knew that Kister is with Jonathan because he is the next victim and would also want to catch him as a copycat. And used this chance to confirm it, through the phone call.