The Ch. 74 I-never-break-a-promise honor-rhetoric and Ch. 80 when-did-I-ever-break-my-promise doubling-down are Chekhov-explicit villain-doctrine-statements-built-to-break.
The payoff
Why this matters
The chapter is the structural payoff of every prior Arlong-promise tell. Forward-pattern: every later villain-honor-rhetoric-pre-loads-betrayal beat (Crocodile, Doflamingo, Big Mom’s tea-party-contract) descends from this East-Blue canonical example.