ピークパフォーマンスボイヤンシーじゃありませんでした
piikupafōmansuboiyanshiijārimasendeshita

Noun
Desu Copula

The polite, past negative form of ピークパフォーマンスボイヤンシー

1. Was not peak performance buoyancy. ; Was not performing at peak buoyancy.

Past/Perfective
Negative
Polite
Terminal Form