Known as Sugawara no Michizane, Kan Shojo, or Kanke, he is a figure from Japanese history. A poet, scholar, and politician that learned Chinese and was known for his Chinese poetry. He was exiled after Fujiwara Tokihara convinced the emperor that he was plotting treason and died a lonely death during his exile. After disasters struck the capital, which were believed to be the result of his vengeful spirit, a shrine was dedicated to him to appease his spirit. He was later deified as the god Tenjin or Tenma-Tenjin, the god of learning.
"Sugawara no Michizane was a noble of the Heian period who was also a well-known scholar, poet, and politician. Born into a family of scholars, he used his abilities to become a minister of the right, but due to a conspiracy by his rival Fujiwara no Tokihira, he was demoted to a post in Dazaifu, north Kyushu, where he died a regrettable death. After his death, plague and drought spread throughout Japan, causing many to fear that Michizane had cursed them. Several lightning strikes on the Seiryoden result in many deaths, and his ghost became known as a god of thunder. After building a shrine for him, the curse eventually died down. He was worshipped as a fearsome god, but as time passed, memories of his wrath faded, and people then discovered his works as a scholar and poet, turning him into a god of scholarship."
—Shin Megami Tensei IV Profile
One of the National Defense Divinities under Tayama's control. He is faced in Walter's route at Camp Ichigaya B2F in the southwestern room, where he is one of two demons keeping a barrier up that prevents people from going further inside. He states that whether they use their power for the good of the country or not, he shall gauge them. In the battle he speaks of young power tempted in the name of ambition and Ancient power bent in the name of desire. He questions whether a heaven or hell will be born when the two clash, and that it must be one or the other. As he is defeated, he states that as long as Tayama has his medium he will be under Tayama's thumb and that being used over and over is an eternal hell. His last words are unfinished as he crumbles.
To unlock him for fusion, Flynn must examine the stone that is his defeated remains with the key item, "Tobiume's Shoot," in his possession. His medium, along with the mediums for the rest of the National Defense Divinities, are obtained by speaking with the Master Samurai at The Hills building in Roppongi after the alignment lock.