In the Whitebeard Pirates: From the Start, I Turned In the Akame Episode!

Xiao Xuan transmigrates into the Whitebeard Pirates and awakens a dungeon System. Every time he clears a dungeon, he can claim a generous reward.

[Imperial Capital Dungeon: An Iron-tier dungeon from the Akame ga Kill! world.]

[Cave of the Demon Dragon Dungeon: An Iron-tier dungeon from the That Time I Got Reincarnated as a Slime world.]

[Soul Society Dungeon: A Diamond-tier dungeon from the Bleach world.]

Xiao Xuan: My very first dungeon is the Imperial Capital? That's ridiculous. I can't handle this!

So Xiao Xuan offers the dungeon to his old man, Whitebeard. From then on, Whitebeard leads the pirate crew in conquering one dungeon after another, while Xiao Xuan collects the dungeon-clear rewards and lives happily ever after.