Are the words coming out of Zuikaku's earbud the lyrics to Cape Kaga?
Yes they are, hence why Zuikaku's embarassed.
Cape Kaga 2It's just by chance!
I-It came up on shuffle, that's all!...is that so.Really, now...Kaga-san, Cape Kaga is so good!HEY Kaga!
I listened to 'Cape Kaga'!5thCarDiv.
Stop using earplugs outside of your own roo......quite.NICE Enka!Pride of Hyakuman-goku, Cape Kaga!
"Hyakuman-goku (1,000,000 koku, Five million bushels of rice) is a nickname for the Kaga Domain.