If Signus is defeated while the pet is equipped, Signus will become unkillable upon taking fatal damage, then start shaking while emitting black particles. Junsi will then teleport behind Signus and deal the finishing blow to Signus, killing him and dropping his loot.
The item can also be dropped by Signus at a 100% chance in any mode if defeated using the Pristine Fury.
- The item can also be obtained from the Starter Bag if the player is named "Lucca" or "Lil Junko".
- The item is a reference to the character Junko from the Touhou Project series.