I watched this years ago.
He lives in a town that’s being sold and destroyed, jumps dimensions with his friends and dog and meets a Omnyo mystic in one of the dimensions.
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This is Magical Shopping Arcade Abenobashi.
Two kids whose families own businesses in a shopping arcade that's scheduled to shut down are thrown into a series of dimensions, each one a parody of some form of anime or video game, and try to find their way home.
In one episode, Return to Life! The Legendary Onmyou Mystic, the kids meet a mystic.
Arumi and Sasshi have finally made there way home. But Arumi's grandfather will still be dead. Sasshi refuses to let that happen, so he jumps again into another world. But in the end he cannot dream away reality.