Could be, but I see no fairies in all 5 panels of this doujin page so I speculated that Shoukaku performed a magic trick to make her ear grow and eavesdrop on the conversation.
How did Shoukaku make her ear grow big to eavesdrop on people's conversations? MAGIC.
As per the request of certain artists members of the Naval Staff, Akashi set about making it so that "if you rub part of a shipgirl, that part grows larger", but it seemed to have been oddly localized into unexpected regions.
Even earlier than Kaga-shan!Shoukaku-nee gets up, like, super early every day!I'm piqued... but...Ooooh!No! Bad Shoukaku!She always makes stuff that Zuikaku wants to eat!I heard that they were all coming out here for a picnic, so I brought some fruits for them...To be eavesdropping on your own sister's conversation...!Eh? What? What's going on here?And now it's a sudden tell-all?
How'd it get like this?
What should I even do?