Your (BORDER NATION) contact mentions a suspicious man they found. he claims to have lost his memory, but he is really a dangerous man working for the (BLACK MAGIC NATION). Since using black magic uses your soul (and thus memories) as ammunition, it is possible that he may be telling the truth. It is up to the player to determine what to do. Options are as follows;
Kill him- better safe than sorry.
Not sure yet- keep him around for study.
He's harmless- keep him around, and give him a life here.
He's harmless- Tell him the truth, and let him decide what he wants to do.
He's useful- Lie to him. Since he has no memories, he has no reason not to trust you.
(Note: Make up a new name for this game.)