Bakuenken

Bakuenken (Bursting Flame Sword, 爆炎剣) is the second strongest Noble Phantasm of Seito Kurogane and has his hellfire take the form of a sword, able to wielded by him thanks to his training. The Sword, like Naraka Yari, can be controlled remotely by Precision Prana Control. Completely Unique to it however is the fact that it can be detonated remotely and create an explosion of hellfire, capable of covering a wide area.