Got a massive writing block. I managed to conjure something up for the meantime.
As a Pirate
In which, the eldest daughter of Dragon never became the marine that her grandfather wanted her to be, and goes gallivanting off around the Grand-line as a pirate. (As a Marine AU)
"No blood of mine won't become a marine you said. Dragon was a strange child, but there's no way Kirito will leave me!you said. Then what is this?!"
Sengoku slammed the newest issued bounty onto his desk in front of a catatonic Garp. The picture showed a young woman standing on top of a pile of defeated marines, one gloved hand holding onto the brim of her black cap on top of her head and the other in the pocket of her pants. Blue eyes stared mischievously at the camera.
The Fleet Admiral of the Navy shouldn't really be surprised that Garp's offspring turned out the way they were. Garp's near fanatical 'training and brainwashing' for installing the marine mindset turned into 'torture and brain-bashing'. His child rearing abilities (if they could even be called that) seemed to turn whomever he raised away from the 'Justice' motto rather than to it. Just look at Dragon – he somehow got it into his head that the world needed a revolution, and he gained a loyal merry band of followers who seemed to do everything in their power to topple the Wold Government. The world already had three powers of balance, but Dragon's revolution wanted to flip the bloody scale and plant itself into a system that was working just fine.
Sengoku didn't even know why he expected any better when another criminal descendant of Garp made her way into the world at large. At this rate, Garp's other grandchildren – including the other two boys he adopted (the poor things) and his own biological grandson – would become anything but marines. Sengoku was half convinced that the three would join their 'father' in the revolution or start sailing the seas like the chaotic vagabond their sister was. Either way, the marines had better start preparing for the shit-storm that was coming in about a decade give or take.
Ever since he heard the news, Garp dug himself into an extremely deep pit of depression that Sengoku almost doubted that he would ever get out of. It was the exact opposite of the reaction that the Fleet Admiral was expecting. When Dragon abandoned his father, Garp went on a rampage that almost crippled his son's journey as the 'most wanted criminal alive' before it even began. The depression didn't last long when Garp came to the conclusion that his 'sweet darling granddaughter' Kirito was kidnapped and forced to engage in breaking the law and assaulting marine bases and ships.
("Look at how terrified she is! Don't worry darling, Grandpa will come save you!"
"Does she look like she's terrified?!")
The problem, was that Monkey D Kirito was as slimy and as hard to catch as her father, darting around the seas and destroying ships and buildings with the ease of her grandfather.
The level of denial that Garp seemed to be drowning in was a bit concerning. It came to the point where the idiot started crossing off the 'WANTED' and scribbled 'MISSING' over her bounty poster, before waving it around Marine HQ, asking passing officers if they had seen her.
At his rather spectacular track record of raising children, Sengoku was waiting for three more bounty posters in the next ten years.