We don't know much of anything about her personality, but there is preview art of what Shinano will look like once Kantai Collection gets around to adding her.

I was right; she's adorable.

Daonbooru will demonstrate.

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The most wonderful thing about BBs
Is BBs are wonderful things
Their sides are made out of iron
Their guns are made out of pain
They're crashy smashy bashy flashy fun-fun-fun-fun-fun
But the most wonderful thing about BBs
Is there is more than one
The~re is more than one!