はとこじゃなかったです
再従兄弟じゃなかったです
hatokojanakattadesu

Noun
Desu Copula

The polite, past negative form of はとこ

1. Wasn't a second cousin.; Wasn't related as a second cousin.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana