After killing the last NPC, and talking to him to receive your rewards/gifts, he will vanish when you reload the area. (have not been able to find him after he left).
उनीहरूको लागि नोबेल पुरस्कारको साथसाथै उनीहरूको लागि नोबेल पुरस्कार र हिरासतमा मृत्यु भएको छ।