Board Thread:General Discussion/@comment-6192846-20150822000535/@comment-3467648-20160504222352

Servant of Evillious wrote:

It looks pretty clear to me that they're not the same blade; ignoring the fact the blade colors are different, their shapes don't even closely resemble one another. You can argue Kiril may have Grim the End, but it's big jump to assume Irina had it too imo.

Seth wasn't "readmitted" into Project Ma after Adam left. Adam fled, he took over, Meta fled, his human experiments were discovered, he was fired, and somewhere between then and Survival's events, he was put back in charge. When he started experimenting with trying to create the vessels of sin is vague so it is possible he passed it on though it seems silly he would want to experiment on Irina while giving Kiril a means to assassinate her. I didn't explain myself properly. I mean Grim the End could have ended in Kirill's hands by accident, if Irina left behind the murder weapon. Although you're right, the blade color is different in both cases (I didn't notice that at first)

Anyway, if Kirill had the key that would explain how he could infiltrate into the Temple, a forbidden place for most of the Levianthans, although that's just speculalation (that would arise the question how he could get it).