Why, you ask?

If you want to solve a problem, then the quickest way to do it is to talk directly with the source, no?

Listen well, Zuikaku.

Once, we used to have bodies of iron.

We saw a lot of things back in those times.

And from that power we used to have...

Ship Girls are born.

We are the only power that can compete with the Abyssal Ships...

And we must use the power we have to protect the sea.

However, some emotions from when we were still ships sprouted inside of us.

Our newborn hearts, when touched by old memories lie deep inside of us, can have negative influence on our consciousness.

For that reason...

We have no choice but to go through a certain way in order to reconcile both our past and heart.