User blog comment:Observer Supreme/918 Review and Thoughts/@comment-24850639-20180921162124

Trying to figure this family out is making my head hurt, so I truly hope Oda dives headfirst into this stuff next chapter.

- It is clear that the Kozuki clan fell from power 20 years ago. It is not clear that Oden and his wife DIED 20 years ago. Momonosuke has vivid memories of his father, so either he's wayyyy older than the story is letting on, or there is a time gap between when the Kozuki clan was dethroned and when Oden actually died. Oda already pulled the rug out from under us with Momo actually being Oden's son and heir, not Kin'emon's, so I strongly doubt that he's also pulling a fast one with Momo's age.

- Nekomamushi's comment "To think, only a few scarce months have passed since it happened" would appear to support this. The "few months" comment also lends credence to Raizo, Kanjuro, and Kin'emon's journey, as them being on the run for a few months between Wano, Dressrosa, and Zou makes a lot more sense over a few months, than 20 years. They left Wano to find allies to fight Kaido after all, 20 years without a new single ally until they met the Straw Hats? Not seeing it. The Minks were already down for the cause, so they don't necessarily count as a "new" ally.

- We were given a brief glimpse of the attack on the Kozuki clan in Chapter 819. Momo can be seen crying and calling out for his mother, and Kaido telling Momo that his father is foolish (which means that the 2 have met, which is huge). This again confirms that Momo was present when his parents were killed, so again, can't have possibly been 20 years ago that they were killed, unless Momo is somehow older than most of the Straw Hats.

- At the same time, those gravestones are clearly older than a "few months". That kind of wear and damage takes YEARS to accumulate. That being said, Momonosuke shouldn't have one if they were built 20 years ago for obvious reasons.

- Adding the fact that Momo was alive and capable of speech at the fated time, I wouldn't put him at any less than 4 years old in the flashback we saw in Ch. 819.

So to sum this all up, I got nothing. It makes sense for a lot of reasons I've stated that Oden wasn't killed 20 years ago but sometime later, but at the same time it doesn't make sense for it to have happened just a few months ago either with the age of those gravestones. I don't think these graves would have been constructed before Oden's death become public knowledge, but the graves seem way too old to have been erected recently. Please make sense of this soon Oda.