Prequel to Steal Moon. In order to find out the criminal who killed his lover, Kai shows up in the town that the two groups, Saruto and Maina, are ruling. There he manages to get close and become the bodyguard of "Steel Ratri", a man who has the same ring as Kai's lover, on his hands, but...

Vol. 2 - The story between Ratri and Kai continues...
(from Countless-Time)

Note: Ratri means "Night" in Sanskrit and can be seen in both terms of good and evil. References are made to Ratri's name in comparison to the city.