Firstly, a Shrine is a place where Kami(gods) are enshrined. This place where Sasuke is looks exactly like a Shrine. With the Torii at the gate and the miniature prayer shrine gives it away.
Anyway, I think Sasuke is gonna meet either a Shinigami(makes more sense) or a Tengu (which correlates to the entire uchiha clan including susanoo)
Anyway, I think Sasuke is gonna meet either a Shinigami(makes more sense) or a Tengu (which correlates to the entire uchiha clan including susanoo)