ひめまるかつおぶしむしでしょう
姫丸鰹節虫でしょう
hime marukatsuobushi mushideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of ひめまるかつおぶしむし

1. Probably a princess round bonito flake worm.

Polite
Presumptive
Conjecture
Usually Written in Kana