こし あか つばめじゃなかったです
koshi akatsubamejanakattadesu

Noun
Desu Copula

The polite, past negative form of 腰赤燕

1. Wasn't a kasumi (red-backed swallow).; Wasn't a kasumi-patterned kimono.

Past/Perfective
Negative
Polite
Casual Register