Blue Sheep Reverie, also know as Aoi Hitsuji no Yume, is manga created by Makoto Tateno. There are currently 5 volumes with 4 being published in English by Juné.In a city without a proper name protagonist Kai is in search for the killer of his lover, Maria. He suspects that Lahti, one of the "Four Kings" of the city, is the killer of Maria and gets close to him to carry out his revenge.
This manga provides examples of:
- Faking the Dead: Maria faked her own death.
- Professional Killer: Lahti and Maria started as people who kill for a living.