I totally lost it in panel 3. The artist has a good choice in backgrounds for effect.
Actually that was a sort of meme, almost like loli-Zuikaku had seen the universe when she saw Kaga's "Akagi" disguise.
What'cha playing?Akagi-shan!Oh, is that so?It's the real Kaga-shan!!Zuikaku too! Zuikaku too!Zuikaku-chan.Kaga-shan looks weird...You got found right out, didn't you Kaga-san.