懐古 かいこ趣味 しゅみじゃなかったです
kaikoshumijanakattadesu

Noun
Desu Copula
no-Adjective

The polite, past negative form of 懐古趣味

1. Wasn't nostalgic.; Didn't indulge in nostalgia.

Past/Perfective
Negative
Polite
Casual Register