The Murakumo Units(ムラクモユニットMurakumo Yunitto) are special types of Boundary Interface Prime Field Devices that wield the Nox Nyctores, Lux Sanctus: Murakumo. The Murakumo Units were created after the First War of Ars Magus as Anti-Sankishin Core Units(対三輝紳用ユニットTai-Sankishin Koa Yunitto).