同人 どうにん雑誌 ざっしではありませんでした
dōni nzasshidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 同人雑誌

1. It was not a fan magazine.; It was not a self-published magazine.

Past/Perfective
Negative
Polite
Formal Register