Dying With Cry

Noah, a private investigator, reflects on an old case while searching for a missing family.
Six years ago in Najamo he was involved in a dispute between a shady organization.
Things went bad and there was a terrible explosion. The case was closed, but his gut never let go.
Now, he returns to Najamo in search of his lost partner, Ukon, who was as close as a brother.
Noah meets a man named Marley, an old agent of the NSA who he thought had died six years ago.
If Marley is alive, then so is hope. So is Ukon.
Marley begins to tell him the whole, true story.
And Noah has a revelation of sorrow.

[From DLsite English]