voice
Kamui told me about it. In order to protect Subaru I made a deal with the Sakurazukamori, he would kill me in Subaru's stead.
[Both of them had actually told her and show knowing pretty much everything about the night she died. One knew due to Kakyou and the other from Subaru telling him.]
But I guess that means that Acumen didn't have to worry about a replacement, and I don't have to worry about a fake me looking after Subaru.