Deep Blue

A chaotic isolated city controlled by the mafia. Kyle, who's living in that city, dreams that one day he'll leave the city and gain true freedom. Currently, he's teaming up with Ewan, who he rescued on a whim six years ago, and the two of them make a living as a "jack of all trades". On one hand, Ewan seems to love Kyle and takes every opportunity to take care of him and emphasizes that "My body, soul, and everything belong to Kyle." On the other hand, Ewan is easygoing but also somehow suspicious/shady, and worst of all, even though they're living together, Kyle mostly knows nothing about Ewan...? (Source: Gentosha Comics, translated)