Touge Oni: Primal Gods in Ancient Times, Vol. 5 (manga)

When En and company learned that Hitokoto-Nushi had retreated to Earth's highest peak, they knew the journey ahead would be an arduous one… but no one could have ever predicted it would take them to the moon!! To reach the “summit,” the group will have to rely on the grace of the powerful heavenly god Tsukuyomi… if they can find the god's remote shrine… and don't get ambushed by bandits first!!