Rance Era

RA is the year designation during the era when Rance was the Demon King. The second part of Rance X took place in RA0015.

RA0004 - The Great Hero Calamity occurs.

The events of Toushin Toshi occur during the RA era (circa RA0022), but the game's exact position in the canon after the release of Rance X is uncertain.