Dialect identification

I am recently reading Tsuredzure Children, and in Volume 7 Chapter 116 there is a new character who spoke a … strange version of Japanese.

Sample text:

本山君、学校の中案内してくれへん？

本山君って彼女とかおんの？

でも今回はちゃうねん！大学もこっちで通えるいうし、友達いっぱい作ろう思うねん！

Where is she from? Thank you!