背黒 せぐろジャッカルではありませんでした
seguro jakkarudewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 背黒ジャッカル

1. Was not a black jackal.; Was not a person with a dark/shady character.

Past/Perfective
Negative
Polite
Formal Register