(NPC) Mark Bug

There is bug at (NPC) Mark (Natural Stone NPC), when I'd like to make a natural stone, material need by that NPC is : Diamond, 2x white spirit and 2x black orb... i think thats a bug, because material that need is : Diamond, Red Fire, Yellow iron, Blue water and green wood. so, if that is a bug, please fix it. thanks

It's not bug. NS manual which drop from each monster need different element. I think you got NS manual from Bubble dragon right?

If you got manual from Marionette it require fire brown soil light and dark. I think NS manual from kibara is easiest (I forgot which element require but no light and dark)