What should i do if i give item to npc in accident..

[kawing168]

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When i try to give 2 bag (with lot of item inside)to my friend for transfer, i gave them to npc in accident..
Is there anyway i can have those item back?
They aren't some kind of good item,but someone gave them to me when i start at this server, but they are really meaningful for me.

Is there anyway i can have them back?i did peti like an hour ago, but seems no1 going to reply me =(