The Azumi, sometimes referred as Azumi-no-Isora, are a ancient tribe of water gods from Japan who excelled in fishing and are well versed in the way of water. It is said they are the descendants of Amaterasu, Tsukuyomi and Susano-o, the three gods sired by Izanagi after he returned from Yomi, the land of the dead. The deity Azumi is said to be a guardian of the people after which it is named, and can control the element of water similarly to its sibling deity, Isora.
"Origin: Japan. Gods of the ancient Azumi race. They excel at using water magic. It's said they come from the south. Though they may prefer living in the sea, they have scattered across Japan in peace."
"Water gods of the ancient Azumi tribe, versed in the way of water. Often referred to as Azumi-no-Isora. They are said to have arrived in Japan from the south, preferring a life at sea to a life on land. The god Azumi-no-Isora-Kami is their chief. Later, having settled peacefully in Japan, they scattered throughout the land. Azumi-no-Isora are also called Azumi-no-Isora-Maru, and it is for this reason that boats in Japan are named with the suffix "-maru," as a prayer to the Azumi for protection against disaster at sea. Azumi are identified with the shrine god Amenokoyane."
—Shin Megami Tensei IMAGINE compendium
Azumi can be contracted on Nakano field. They appear as enemies in the early kappa events, on Ikebukuro field, and within Nakano Stone Site.
"A water diety of the Azumi, a Japanese fishing tribe. It can control water. The three gods born from Izanagi after he returned from Yomi are said to be the tribe's ancestors."
—Devil Summoner: Raidou Kuzunoha vs. The Soulless Army Devil Chart
Azumi appears as a random enemy in the streets of Dark Tsukudo-Cho. It is the first demon to have the Fly investigation skill available, which it can use to reach a Bead healing item at Raidou's command. Its Bufu and Dia skills can be used to make the encounter with Tsuchigumo easier, as it is weak to Ice skills. Leveling up Azumi once to learn the Freeze Shot combination skill will allow Raidou to quickly damage the three mobs during the boss fight. Leveling Azumi up once more to learn Heal Boost will make its Dia skill more effective during the fight as well.
"A god from Japanese lore that can control water. Barnacles and algae cover its body. The Azumi fishing tribe that came from the south claim to be descended from it. The Azumi tribe's ancestors are said to be the three gods born to Izanagi after returning from Yomi no kuni."