On April 19th 2021, Wagakki Band released the music video for their single “Aria of Life”「生命のアリア」. This is the full version of the opening of the anime Mars Red, directed by Sadamitsu Shinya (Fushigi Yuugi, Mobile Suit Gundam) and by studio Signal.MD (Recovery of an MMO Junkie, FLCL Progressive).
Funimation is streaming the series and describes the show as:
It’s 1923, and until recently, vampires kept to the shadows. When the mysterious blood source Ascra appears, their numbers swell, leaving Japan covered in bodies. In response, the government spawns its own coven to infiltrate the dark. With S-rank vampire Defrott and the rookie Kurusu, this kill squad is made for one reason: to hunt the undead. Bloodsuckers beware; the night belongs to Code Zero!