The graveyard of roses

They one said when you die, a rose blooms on your grave once you are buried. And if you find a grave with no rose, their soul is still lurking in the place where they last died. The reason for that is because of a major mistake they had to fix, but died before they could. You stop people from making those mistakes because of pity for the aftermath. While doing one of your missions to stop a murderer, you met the boy who you helped fix his mistakes. Not because of pity... But because of your @&%$ for him.