If it hadn't been tampered with, the combustion relic would have burned up completely and not left any evidence behind, but because someone messed with the seal that controls its fuse time, it didn't ignite properly, so some of it got left behind. Basically only onmyouji use this kind of tool, and, well... You can draw your own conclusions from that.
But I can promise you this is from them. It's got Old Kinsei's signature all over it. That's also why I'm certain it was tampered with; Kinsei's not the kind of guy who'd make this sort of mistake.
voice; un: karakasa
If it hadn't been tampered with, the combustion relic would have burned up completely and not left any evidence behind, but because someone messed with the seal that controls its fuse time, it didn't ignite properly, so some of it got left behind. Basically only onmyouji use this kind of tool, and, well... You can draw your own conclusions from that.
But I can promise you this is from them. It's got Old Kinsei's signature all over it. That's also why I'm certain it was tampered with; Kinsei's not the kind of guy who'd make this sort of mistake.