What's Diamond Dust Rebellion?

Also, in my theory that Yachiru is Kenpachi's zanpakto, he may know her name, but he doesn't realize he knows. Big difference.

At the end of the day this is just me being curious as to her past, since it's been hinted at a lot and it's really interesting and I wanna hear about it but we won't because Kubo doesn't know how to write and thinks we want more Fullbring arcs.