Blue Sheep Reverie Series by Makoto Tateno

Sweet young Kai and the doctor Maria shared a bond that they thought no one could destroy...until Maria's brutal murder tore her from Kai's arms forever. Now, Kai wanders the pitch-black streets of the inner city searching for the man who stole Maria's life. But will he end up a pawn in a gang war that will force him to fight for his very existence? With both a mysterious electronic frequency and a strange, powerful man named Lahti shadowing his every move, Kai must slay his new-found enemies.. moreSweet young Kai and the doctor Maria shared a bond that they thought no one could destroy...until Maria's brutal murder tore her from Kai's arms forever. Now, Kai wanders the pitch-black streets of the inner city searching for the man who stole Maria's life. But will he end up a pawn in a gang war that will force him to fight for his very existence? With both a mysterious electronic frequency and a strange, powerful man named Lahti shadowing his every move, Kai must slay his new-found enemies...or fall prey to their desires! less

In the city called "Dawn" is a man with the name of “Night.” Every evening, Kai is embraced by “Steel Lahti,” opening himself to him. It’s unclear if that truly can be called love, but that doesn’t even matter anymore. Kai doesn’t just want to be held softly and treated sweetly… As "Steel Lahti" and Kai whirl round and round each other, what will happen as their love and their hatred become complexly intertwined?

Akatsuki—a city ruled by violence and death. Lahti and Kai live above and among its dangerous streets, fighting, hurting, and supporting one another as they battle to keep the city controlled. That is, until Kai falls into the hands of a rival gang, his body to be abused and defiled. Making no attempts to free himself, though, Kai is willing to throw his life away if it means he might be able to protect Lahti... moreAkatsuki—a city ruled by violence and death. Lahti and Kai live above and among its dangerous streets, fighting, hurting, and supporting one another as they battle to keep the city controlled. That is, until Kai falls into the hands of a rival gang, his body to be abused and defiled. Making no attempts to free himself, though, Kai is willing to throw his life away if it means he might be able to protect Lahti. The love and bonds between these two urban warriors is set to be tested in this jewel of a hard-boiled romance! less

An all-out war is raging between Mynah and Sarte, and Kai must skillfully weave his way through the battlefield if he wants to escape with his life! He knows he can never hope to return to powerful Lahti’s side…but can he find the inner strength to live without the one man whose voice and touch are forever etched in his memory?

With the city streets of Akatsuki still running with blood, Kai and Lahti continue to fight together to bring order and uneasy peace. The two men''s bond is deeper than ever before, but will forces from the past continue to disrupt their future and destroy the city in the throes of the love/hate personal relationship with the pair? It''s Volume 5 of the ever-popular Makaoto Tateno''s action-packed, sci-fi fan-favorite, and the stakes have never been higher