ピークパフォーマンスボイヤンシーじゃなかったです
piikupafōmansuboiyanshiijanakattadesu

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. Wasn't peak performance buoyancy. ; Wasn't performing at peak buoyancy.

Past/Perfective
Negative
Polite
Casual Register