Unlock: Complete Mr. Phillips, Use Trevor
Search the marked area on the map in the north, go south to a dirt road heading to the right. Keep searching the hobos until Curtis pulls out a gun and shoots. Wait and cover up. Later, pursue him, hit him, then grab him. Bring him back to Maude.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art.