Miw Kouha or violet amber is a medical plant in the Utawarerumono world. When grounded it takes the form of a purple powder. It is exceedingly rare as most are lucky to see it once and getting some is difficult as they are really expensive. Mixed correctly and it can help with serious medical issues like during fits caused by Yuzuha's illness. However should a supply run out it is difficult to obtain more of it.