User blog comment:NecrusIV/Requesting approval: El'Jonson Heresy/Empire of Ynnead/@comment-3258762-20120820155152/@comment-4608429-20120821095047

I doubt that a Samurai-based Primarch would write the Codex Astertes, as the Samurai were extremaly resistant to change historicaly. Hours is probably the best candadete.