Sugar Dark: Umerareta Yami to Shoujo

Sugar Dark: Umerareta Yami to Shoujo is a completed seinen manga written by Mebae and illustrated by Ooiwa Kenji.

Plot
In an era filled with war, Private Reed is sentenced to death for murdering his Superior and is labeled "Criminal No.5722." While being led to his grave, a mysterious person decides to take him in.