Fuyajou Eden (不夜城エデン) is the ninth studio album by Japanese rock band Alice Nine.

[1] In 2019, the group returned to their old name and "Fuyajou Eden" was described as "Alice Nine's first album in 11 years".

The music video for "Testament" aired on YouTube on March 22, 2020, showing a mix of the band's old and new sound.

The track "Tsumibito" (罪人) was inspired by the Children of the Whales manga.

ONEMAN TOUR 2020「 Fuyajou touhikou 」" featured twelve dates across Japan.