All it took to defeat King Harald was a powerful, ancient blood giant with the color of supreme king haki and the added power of an ancient zoan fruit who also wields an incredible ancient weapon that also ate a devil fruit.
Simple, yet effective.
The flashback itself seems less about the drama (which is hard for me to get into because of how stupid Harald had to act to get into this situation) and more about Oda holding off revealing Loki’s devil fruit ability and Ragnir for as long as possible. And even now, Loki’s devil fruit didn’t get a full reveal because Oda must wait until the big super awesome fight against Imu in Elbaph to unveil it. But, I’m sure it’s all gonna be worth it.
…Sorry. Sarcasm’s hard to display in reviews sometimes. *AHEM!* NO! It WON’T be worth it.
Haki is the alpha. Haki is the omega. Haki is all. All is haki. How to defeat Imu’s knights? Haki.
How to defeat someone under Imu’s Domi Reversi? Haki.
Mammoth Base Opera Castle 