I Killed the Immortal

My name is Arthur Gothfrid and all I wished for was to marry mayor’s daughter. Now my legs lie two meters away from me. But I wasn’t even given the opportunity to die. The Immortal recognized me as his student. Kill me. – that’s what he said, – and then you will return back home. What are his motives? He never told me the answer. Why would he do that? He never said.