Responses
magic maybe ?
or [spoiler]
maybe Heil gave it to him (just a hypothesis of mine)
since Heil can commute between the netherworld and the living world maybe he took a picture of him when cameras were invented and gave it to him
If he had his lover (Kaveri) 1500 year ago, where did he get such a lovely photograph from? xD
It doesn't look like a painted picture and quite sure they didn't have cameras at that time... xD xD