しゅ系列 けいれつ ほしじゃありませんでした
shu keiretsu hoshija arimasendeshita

Noun
Desu Copula

The polite, past negative form of 主系列星

1. Was not a main series star.; Was not part of the main cast.

Past/Perfective
Negative
Polite
Terminal Form
Astronomy