tl;dr
Me: Ninjas rarely(almost never) refresh if the first target is not killed.
Xinhuan: Not true. Happened to me many times.
Me:Gonna set off to create a video to prove a point.
PS: please try to view the video on a computer as it has annotations that aid the ease of transition from one important instance to another.
If you are interested in the whole grandmother story, it is as follows: I posted on the forums, giving some tips on how to score better in the snowman event and made the claim that Ninjas will only refresh if the first target they hit dies.
<<Xinhuan:
This is not true at all. >>Please note that Ninjas will only refresh if the first target they hit dies.
Subsequently, someone else chimed in.
<<exi:
This is also not true at all.>>
This is not true at all.
Sorry let me rephrase
Ninjas will refresh most often if the first target they hit dies. If the first target doesn't die and another creature dies instead, most of the time, the Ninja will not refresh(at least that is what I feel it's like)
Exi is inconsequential to the matter as he did not reply anything else about the topic in subsequent posts. Xinhuan, on the other hand, continued adamantly that my theory was unfounded, as can be seen from the subsequent post.
<<Xinhuan:
I said it isn't true because it just isn't true. Plenty of times the Ninja refreshed himself and others perfectly fine, and his primary (first) target is not killed. I obviously cannot substantiate it with numbers or provide numbers proving or disproving that the % chance is incorrect. I have just never ever felt the % was off, regardless of whether the first target is killed or not. People just like choosing the first target as the unit with lower health because if you make more kills, the chance is procced for each death, so it makes sense to maximize the number of units that will die in a single attack, leading to the impression that the % is flawed if the first target doesn't die. Clearly if less units die, the chance of refreshing is going to be lower. >>I understand that perhaps it is not supposed to happen this way but it is not just me who has this sentiment. This is a forum topic where some others feel the same way too. Besides, the Ninja aura mechanic is bugged, I will show it in a later video. Stay tuned!
This is also not true at all.
The last straw that gave me motivation to create this video was his post just a few hours ago, still strongly making his stand that if the first unit did not die whilst other units died, there was still a high chance for a refresh.
Now that the story-line has been straightened out, let me state a few things about the video. This video was taken without any stopping; as you can monitor the energy dropping after every quest done. Inside, you will find 15 instances in which the Ninja had attacked a unit, didn't manage to kill it, killed another unit instead. Not once during those 15 instances did the Ninja refresh him/herself or the people in the aura.You are very unlucky then. During the snowman event, I've seen Kai refresh himself and others many times when the first mob didn't die, and the second and third did.So let say it kills the 2nd monster and even 3rd but first one not dead, it wont refresh. Sorry to say, not once, witness it too many times. So the aura command will work on first mod.
People tend to only remember the bad events, but not the good events. It's confirmation bias.>>
In case you aren't viewing this on a computer, timings are as follows
18:15 (1 kill)
20:07 (1 kill)
25:05 (2 kills)
30:46 (1 kill)
32:25 (2 kill)
44:58 (1 kill)
58:20 (1 kill)
1:01:49 (1 kill)
1:27:40 (1 kill)
1:31:07 (1 kill)
1:35:30 (2 kills)
1:39:40 (1 kill)
1:41:00 (1 kill)
1:44:20 (1 kill)
1:52:30 (1 kill)
In conclusion, Ninja's aura should actually include another line. (provided the first unit targeted perishes).
This totally reminds me of the time when Pokemon Go first came out. I was really hardcore(10s of km's a day), running around hatching hundreds of eggs. Some ignorant people kept claiming that eggs could hatch regional Pokemon even if it wasn't from that region. I told them no. Between my friends and I, we had hatched thousands of eggs and not one such Pokemon popped out. They were still insistent about it. Well, as they say, the rest is history.
So Xinhuan, I hope you are now convinced that what I have been stating all along was correct, unless my game is severely bugged. If it is, I would appreciate if you showed some video evidence of the many times you claim that Kai is able to refresh despite the first unit not dying. I am sure it would not be difficult to film it in action since according to you, it happens many times; unless it's your own confirmation bias
Looking forward to your reply. 
