真剣 しんけん白刃 はくじん りではありませんでした
shinken hakujintoridewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 真剣白刃取り

1. Was not taking it seriously with a white blade.; Was not seriously disarming with a blade.

Past/Perfective
Negative
Polite
Formal Register