All would die...
Kasumi couldn't deny that possibility. Afterall, various religions have promised the coming of the end of days. A day of judgment basically which even the divinities themselves cannot escape destruction from. If such thing happened then there really was nothing she could do about. She was afterall, a mere mortal walking on the surface of the earth. Not a hero or anything of the sort.
"Assuming that I did not get killed immediately, I would prioritize on survival. Find out about this being as much as I can while trying to stay alive."she replied, finally finishing her drink. It would be a delicate balance...if she prioritized too much on information gathering then she would have earn this being attention and likely even get wiped out from the spot. If she focused too much on survival then it would just be a lifetime of running until she meet a deadend. One that she would be hopeless to defend herself against.
"Should death be unavoidable, then I will make sure to tell everything I knew about this being to other survivors. Put faith in them that they would utilize the knowledge well."In contrast Kasumi was not afraid of death. Not that she was suicidal or chasing martyrhood..if she had given everything she have and still lost then she could only accept them with grace.
"Though if you meant the time between now and then...I suppose training yourself would be my answer. We can only do what we can do...and no one else should fault us for that." she finally finished.