Nyuuborutsu Shin Gurabirei is one of Brago's spells, an upgrade of Nyuuborutsu Ma Gurabirei gained during the 10-month training period in the King's Festival Arc. It is a Shin spell, and is one of Bragos's most powerful attack spells .
It is a large, transparent purple ball that implodes upon itself shortly after being cast, drawing in objects much like a black hole. It was only seen once, being used on Clear Note's spell Shin Kuria Seunousu Zarefedoora, and is the first spell used to directly attack Clear in the final battle.