Amaterasu is the entry point into this dictionary's single most important naming pattern: the Uchiha clan's three ultimate Mangekyo Sharingan techniques are named, in order of acquisition, after the three most powerful deities born from Izanagi's purification ritual in the Kojiki — Amaterasu (sun goddess, born from his left eye), Tsukuyomi (moon god, born from his right eye), and Susanoo (storm god, born from his nose). This isn't a loose thematic gesture; Kishimoto maps the myth's own birth-order and eye/body correspondence onto the techniques almost exactly. The corpus captures the in-story logic explicitly at Vol. 43 p.044, where Itachi explains to Sasuke that Susanoo is "THE ONE OTHER JUTSU THAT TOOK ROOT IN MY EYES... ONCE BOTH THE TSUKUYOMI AND AMATERASU WERE AWAKENED" — i.e., the manga treats Amaterasu and Tsukuyomi as prerequisite awakenings that unlock Susanoo, mirroring how the Kojiki presents Amaterasu, Tsukuyomi, and Susanoo as siblings born together from the same purification but ruling different domains (sky, night, sea/storms).
Giving a jutsu a real kami's actual name is a bolder move than it might look from an English-reading distance. Amaterasu isn't folklore trivia in Japan — she's the mythological ancestor of the imperial line and the deity enshrined at Ise Grand Shrine, the most important site in Shinto. Naming a black-flame assassination technique after her is roughly equivalent to a Western fantasy series naming its deadliest fire spell directly after a specific, still-venerated religious figure rather than a generic mythological reference — which is likely part of why VIZ makes no attempt to translate or explain the connection anywhere in the corpus; the name is left to function as pure sound for English readers, stripped of the religious weight it carries in Japanese.
The corpus also shows Kishimoto building outward from the myth rather than just borrowing the name once. Itachi's specific Susanoo variant, used to control the black flames directly, is called 須佐能乎加具土命 — invoking Kagutsuchi (加具土命), the Shinto god of fire whose birth burned and killed his mother Izanami, giving this dictionary's Susanoo entry its own second layer of mythological naming. Read together, Amaterasu, Tsukuyomi, and Susanoo form a genuinely researched trio rather than three techniques that happen to share a vague "Japanese-sounding" theme — a rarer level of naming discipline than most of this dictionary's other entries show.
On the localization side, VIZ's flat, unwavering "AMATERASU" across every sampled occurrence (Vols. 42-71) stands in contrast to how the corpus handles less mythologically loaded terms elsewhere in this dictionary, several of which get an explanatory English gloss stapled on for a volume or two before the romanization sticks on its own (compare Rasengan's early "SPIRAL CHAKRA SPHERE!!" gloss, or Sharingan's "MIRROR-WHEEL EYE"). Amaterasu never gets that scaffolding in the sampled pages — it's introduced already fully romanized at its very first appearance (Vol. 42 p.169), suggesting VIZ judged a real proper noun didn't need translation the way an invented compound word did.