|Used For:||Attacking Opponents|
|Used in Which World(s):||Ninja World|
This mace is a tool of Kotetsu's that he usually stores in a scroll and summons in battle when necessary.
As the name suggests, the mace resembles a conch shell with numerous sharp protrusions all over its surface and a marking in the centre that resembles an eye. It's hilt is wrapped in bandages and a chain connects the mace to the base of the hilt. Kotetsu uses it in combination with Izumo's Water Style: Syrup Trap making it easier to deal a devastating blow after the target is immobilized.
It was shown that the protrusions on the mace can spread or integrate to form wing-like appendages that enables it to soar into the sky and evade attacks from the opponent; even while separated, Kotetsu seems to be able to retain control with the mace's trajectory through the use of hand gestures.