MS Gloria

The MS Gloria is a ship led by an all-female pirate crew who specializes in hunting down other pirates. The only three known members are Cresta, Ariadne, and Gloria herself.

Overview
The place is accessible once the side quest from Bonnie/Tatsuko is available, which is roughly after the assault from the four queen.

The visitable part is limited to the main bridge of the ship, where the three pirates are waiting to be arrested. The know they are bested, so they challenge Luka to battle fuck. All three must be beaten to complete the sidequest, with Gloria being the toughest one as she deals 4510 damages. Beating them grant the Pirate King's Proof, and, considering the number of Battle Fuckers present, is a necessity to get the Soul of the Lecher.