An island in [[The Deep]] near [[Krashaprovos]] on [[The Material Plane of Caledon]]. Yossei is a Matriarchal society primarily composed of militaristic [[Gata]] clans. One such clan is [[The Lightfang Clan]]. [[Haru Lightfang]], [[Tsuki Lightfang]], [[Light's Mother]], and [[Light's Father]] are from Yossei.