This work is done by 猹, and seems she has no account here.

Well, this is the reason for me having that bandage on my foot.
Yuxan stepped on a sharp gem fragment and caused him this permanent scar. If nothing was done, this scar would slowly expand itself all over his limb and cause necrosis. The good news was that the whole process takes years to be done, and before that he only needed to cover some common herb on it to stop and erase the expansion. So for him there was always a week or two that his foot is covered by a bandage every month.
As I taking the look of him, I also have that scar and his bandage.
The relationship between me and Yuxan can be found here.