Samurai Lineage Trait ID
The gain_xp trait ID for Samurai Lineage in Hearts of Iron IV is JAP_samurai_lineage.
Samurai Lineage
AllPersonality Trait
Grant this trait to your selected commander with the gain_xp command and the trait ID JAP_samurai_lineage.
About this trait
This man hails from proud lineage of Samurai and remains true to the old traditions and loyalties.