You know what , Rie Tanaka is seiyuu for both Maho and Chizuru ( Ika Musume ) ,Kanemoto Hisako is seiyuu for Katyusha and Ika , and Ika is scared of Chizuru like Katyusha is scared of Maho XD
Y- you should've told me that earlier~degeso!Ika?Geso...?◯kamusume-chan...So...so...so you were referring to the little sister...(sweat)
You shocked me~ika!