[6][7] Both the Kojiki, and the Nihon Shoki (collectively known as the Kiki) record events that took place during Sujin's alleged lifetime.

He is also credited with initiating the worship of Ōmononushi (equated with the deity of Mount Miwa), and expanding his empire by sending generals to four regions of Japan in what became known as the legend of Shidō shogun.

Sujin was enthroned sometime in 97 BC, and during the 3rd year of his reign it is the recorded that he moved the capital to Shiki (磯城), naming it the Palace of Mizu-gaki or Mizugaki-no-miya (瑞籬宮).

Amaterasu was moved to Kasanui village (笠縫邑) in Yamato Province (Nara), where a Himorogi altar was built out of solid stone.

[11] Yamato-no-Okunitama (the other god) was entrusted to another daughter named Nunakiirihime [ja], but her health began to fail shortly afterward.

[3][10] These events still did not alleviate the ongoing plague sweeping the empire, so Sujin decreed a divination to be performed sometime during the 7th year of his reign.

The divination involved him making a trip to the plain of Kami-asaji or Kamu-asaji-ga-hara (神浅茅原), and invoking the eight hundred myriad deities.

Sujin was later given guidance in the form of a dream to seek out a man named Ōtataneko [ja] (太田田根子) and appoint him as head priest.

[10] Out of an abundance of caution, the Emperor also appointed Ikagashikoo (伊香色雄) as kami-no-mono-akatsu-hito (神班物者), or one who sorts the offerings to the gods.

Sujin's aunt Yamatototohimomoso-hime (倭迹迹日百襲媛命), who was skilled at clairvoyance, interpreted this to mean that Take-hani-yasu-hiko (Ōhiko's half brother) was plotting an insurrection.

Yamatototohimomoso-hime pieced it together from overhearing news that Take-hani-yasu-hiko's wife (Ata-bime) came to Mount Amanokaguya (天香久山), and took a clump of earth in the corner of her neckerchief.

[d] Emperor Sujin gathered his generals in a meeting upon hearing the news, but the couple had already mustered troops to the west who were ready to attack the capital.

The Emperor responded by sending an army under the command of general Isaseri-hiko no Mikoto to fight a battle that ended with a decisive Imperial victory.

[3][10] Towards the end of his reign in (36 BC), both the Kojiki and Nihon Shoki records indicate that Sujin started to encourage the building of artificial ponds and canals.

[20] Historian Richard Ponsonby-Fane suggests that Sujin may have been the first emperor to perform a census and establish and regularize a system of taxation.

[21] His name might have been regularized centuries after the lifetime ascribed to Sujin, possibly during the time in which legends about the origins of the imperial dynasty were compiled as the chronicles known today as the Kojiki.

[22] While the actual site of Sujin's grave is not known, the Emperor is traditionally venerated at the Andonyama kofun in Tenri, Nara.

The Imperial Household Agency designates this location as the kofun (tumulus), and its formal name is ''Yamanobe no michi no Magari no oka no e no misasagi.

(Secondary sources) Unless otherwise noted (as BC), years are in CE / AD  * Imperial Consort and Regent Empress Jingū is not traditionally listed.