No, Edera is not a goth band, because they play Dream Pop/Synthpop, while goth music consists of Gothic Rock and its derived genres, like Deathrock, Darkwave, Ethereal Wave, and Coldwave.

If you want to dive into the goth music scene, some of the bands that might appeal to you if you enjoy Edera are Claire Voyant, Love Spirals Downwards, and Sophya.