えらぶだいこうもりでした
永良部大蝙蝠でした
erabu daikōmorideshita

Noun
Desu Copula

The polite past form of えらぶおおこうもり

1. Was the Eternal Isle Giant Bat. ; ; Was a giant bat of Nagara.

Past/Perfective
Polite
Usually Written in Kana