Mantiis – An Agony in Fourteen Bites (2012) is the first studio album by Barcelona-based band Obsidian Kingdom.

It is a concept album featuring a single song divided into fourteen tracks, noted for reflecting a broad range of emotions[3] through a great variety of genres.

[4] The album was recorded, mixed and produced by Jorge Mur and the band at Ax Studios in Barcelona, and mastered by Jens Bogren at Fascination Street Studios.

[5] The artwork of the physical edition was in charge of Elena Gallen, under art direction by Ritxi Ostáriz and the band itself.

[6] Mantiis was well received critically, obtaining positive reviews during 2012 and 2013,[7] which praised the complex fusion of different genres,[8] the originality of the proposal[9] and the quality of its sound production.