うらじろはこやなぎでわありませんでした
裏白箱柳ではありませんでした
urajirohakoyanagidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of うらじろはこやなぎ

1. Was not a hidden white box willow.; Was not an inconspicuous/understated person.

Past/Perfective
Negative
Polite
Formal Register
Usually Written in Kana