"What a traitor..." she said to him, but he kept smiling... And then he killed her... coldly and mercilessly...

Shizu looked at him with a cold discussion, and he was right... who kills his only last friend without a reason...? But there was a reason... And it was that Okama was a bad person... She was Kamari’s "friend", but then gossiped about him after getting close and knowing more about him... And also she planned to kill him one day... Those were the words from her friend, because the friend knew that it wasn't nice from Okama being like that, so she told Kamari everything.