くろたちじゃなかったです
黒太刀魳じゃなかったです
kurotachijanakattadesu

Noun
Desu Copula

The polite, past negative form of くろたちかます

1. Wasn't a black katana.; Wasn't a black whelk.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana