The Nāfuel would be the followers of Virūpākṣa (Pāli: Virūpakkha), one of the 4 Heavenly Kings who guards the western way. They work as guards on Mount Sumeru, guarding the dēvas of Trāyastriṃśa from attacks because of the asuras. Devī Manasā is thought while in the Heavens, from the abode https://128.199.208.170/