Mishaguji was a native god worshipped in the ancient Shinto region of Japan before the Yamato took control, at which point the worship of it became a taboo. Mishaguji was the god of sexual intercourse and if he was left an offering, then sex would become better. It is said that Mishaguji's incarnation on Earth had a very phallic shape, possibly similar to an earthworm, and he would take shelter under rocks or stones. Once Yamato took control however, Mishaguji became seen as a god that only the undesirable and unfaithful would worship.
Mishaguji acts as one of the five demons that controls the Pentalpha system. Players can align with him to fight against mobs representing the other demons within the system. Those fighting against him will face waves of demons belonging to the Wilder, Raptor, and Evil Demon races.
By acquiring enough power for him, players can obtain the ability to fuse him in a special fusion of Take-Minakata and Sarutahiko.
Devil Summoner: Soul Hackers
"A native god worshiped in the Shinano region before the Yamato power took control. Said to be a god born from the ancient belief that rocks and stones housed divine spirits."
—Devil Summoner: Soul Hackers 3DS Compendium
Devil Summoner: Raidou Kuzunoha vs. The Soulless Army
Devil Summoner 2: Raidou Kuzunoha vs. King Abaddon
"It was a native god worshipped in the Shinano region before the Yamato power took control. Said to be a god born from the belief that rocks and stones sheltered divine spirits."
Mishaguji-sama as he appears in Shin Megami Tensei IMAGINE
Trivia
According to the Japanese scholar Yanagita Kunio, Mishaguji used to be a guardian deity for travelers, worshiped under the guise of a phallic stone pillar; at the same time, due to religious syncretism, one of his other forms was that of a white Japanese rat snake
It is thus possible that Mishaguji's design was inspired by a combination between the snake [1] and pillar [2] forms
