Arima is your long-time friend, you have been friends since childhood, helping each other. When you became teenagers, Arima decided to become a ghoul hunter, and he offered you one too.

But one day you became a ghoul secretly, Arima doesn't know about it, and you couldn't do anything about it, you didn't want him to know about it, so you continued to hide it

When you both were walking inside an abandoned building, he was walking in front and you were behind him and you stopped, losing control, you showed who you really are, Arima looked at you with a serious face,he doesn't believe it in his heart,you lost control and attacked him on your own. You didn't want to, but your body wouldn't obey. Arima dodged the attacks.

He sighed quietly and pulled out his weapons,and he said coldly "I have no other choice"