Completeness is the debut studio album by Japanese metal band Ave Mujica. It was released on April 23, 2025, by Bushiroad Music.
The album features seven tracks with a total length of 28 minutes, including "Killkiss" and "Georgette Me, Georgette You" which were used as opening and ending theme songs for the first season of BanG Dream! Ave Mujica anime series. The remaining five songs of the album were also used as insert songs in the same series.
The album managed to rank in the official Japanese Album Charts by Oricon as well in the Hot Album Charts published by Billboard Japan.
Bushiroad Music announced the album on February 14, 2025, with the estimated release date on April 23. The album was recorded at Mech Studio, Sound City in Tokyo while mixing took place at Fennel Studio in Shibuya, Tokyo. The song's lyrics were entirely written by Diggy-MO', a former member of Japanese hiphop group Soul'd Out, while he was part in composing the music as well among others.
On January 15, 2025, the single "Killkiss" alongside the coupling track "Georgette Me, Georgette You" was released. The songs were used as opening and ending theme song for the anime television series BanG Dream! Ave Mujica respectively. On March 6, 2025, the digital release of the songs "Imprisoned XII" and "Crucifix X" followed after both songs were used as insert songs in the tenth episode of the anime series. About a month later, the song "Musica Caelestis" was published as digital download and via music streaming. Six days prior to the albums' release, the song "Alter Ego" was officially released.
The album was released on two versions: Regular Edition and Limited Edition. The latter featured a Blu-ray disc containing the band's fourth concert "Adventus" recorded in its entirety. People who had ordered a physical copy of the album received a second CD featuring a bonus song varying on where the album had been ordered.
Katarina McGinn, writer for Dead Rhetoric, described Completeness as a powerful listen whether or not having checked out the Ave Mujica anime. McGinn further wrote that the music blends elements of symphonic metal, gothic rock, metalcore and pop, the band [Ave Mujica] represent something fresh. According to the critic the album is "resoundingly heavy, playfully melodic, gloriously cinematic, and spellbindingly addictive to listen to." In her conclusion, Completeness is one of the strongest releases in 2025 to date.
Completeness managed to sell approximately 27.000 physical copies in its first week after release leading the album to rank at no. 7 in the official Oricon Albums Chart. When the album's first single KiLLKiSS was initially released, it managed to sell about the same amount in its debut week resulting the single charting at fourth place in the Oricon Singles Charts.
Completeness charted on 47th place in the Hot Albums Charts published by Billboard Japan and stayed in the charts for one week.