Board Thread:Game Updates/@comment-3502824-20171207155334/@comment-3502824-20180109234523

Zuikaku is a CVB with both high offensive + defensive stats which advantage Souryuu + Hiryuu can never have, while for Kaga & Akagi is questionable because they don't have Kai Ni yet (RIP Ikkousen).

Also she is a Major Main Historical for the next Event so there is that part as well (And technically Musashi + Zuikaku are getting central attention for the next Event).

Though for Easy mode the Historical Requirement is probably going to be lax, though there is the potential that Tanaka might exclusively give Musashi & Zuikaku a much higher special Damage Modifier against the Boss compared to the rest of the Historical Fleet (They have actually done this before)