Breath: Volume 2 (yaoi manga)

Yanagi and Arata's encounter started off as a simple pick-up at a bar, but Arata - who balks at homosexual sex - upsets Yanagi to the point of being blackmailed into a sex-slave relationship. It is Arata's charming and innocent personality, however, that breaks through Yanagi's resolve, and deeper feelings begin to form between them. Just then, Yanagi's sex friend and Arata's younger twin brother, Takashi, notices Arata's strange behavior...