えらぶうみへびじゃなかったです
永良部海蛇じゃなかったです
erabu umihebijanakattadesu

Noun
Desu Copula

The polite, past negative form of えらぶうみへび

1. Wasn't a Yamato no Orochi.; Wasn't the Yamato no Orochi.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana