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Book of Raziel 4
ラジエルのしょ4 · Key item
Shiro no Sho
A book of unknown secrets
Versions: Aka no Sho, Kuro no Sho, Shiro no Sho
Other ways to get it
Green Town, St. Classico
Given in the story.
Shin Megami Tensei Wiki by 101LeafyAll Demons Index