よしきりさめじゃなかったです
葦切鮫じゃなかったです
yoshikirisamejanakattadesu

Noun
Desu Copula

The polite, past negative form of よしきりざめ

1. Wasn't a reed-cutting shark.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana