白石 哲平

A young man who lives in the house of Kashiwagi Kyuuzou, Narumi's mentor. Although he is a delinquent with bad attitude, to his closest buddies he is a friendly and funny character. He speaks in Kansai dialect. Since Kyousuke is a friend of his, in the game he sometimes plays the role of Watson and helps analyzing various cases with Kyousuke.

[Translated from Wikipedia.]