Repeating what others have mentioned, the attorneys in this case have done a poor job, and did not make it clear as to who touched who and in what order.
As I understand it, but it has not been clearly determined, Miu is surrounded by a mob of young adults and teens (not all were underage, but all admitted to being intoxicated from both alcohol and marijuana) at 2:24:04 in the following video, he clearly looks to be assessing the situation and waves to his group – as if hailing for help, a moment later one young woman puts her hand on him while confronting him verbally, the other woman also seems to push him as if to tell him to get away. According to testimony (not clear on video) at this time he strikes a young woman in the face – not clear if it was open handed or with a fist, or which woman it was since it was off camera – he is immediately and forcefully knocked down onto his back in the water and hit in the head at least once. Before he attempts to stand up, he is holding the knife which he had in his possession (can be seen in his hand while standing in front of the women at 2:24:21 in the video when played in slo mo – just a few seconds after he hails his friends.) His group testified that he had brought the knife. At this point he could be considered guilty of Battery unless one of the young women had contacted him with force, which is again not clear who, when or how.
In the process of beginning to stand back up, he is shoved back down forcefully from behind by young man in yellow shorts, Miu immediately jabs that young man in the stomach with the knife – apparently this is the first stabbing.
Important points in the video (play video at half speed or slower for better detail):
2:24:04 Miu appears to hail friends from his group as if intimidated by the group surrounding him.
2:24:21 Miu is holding the knife in his hand but not pointing it toward others.
2:24:26 Miu is forcefully knocked onto his back into the water and struck in the face.
2:24:30 Miu is forcefully pushed down from behind by yellow shorts guy.
2:24:31 Miu jabs yellow shorts guy in the stomach with the knife while being knocked down by yellow shorts guy.
2:24:38 denim shorts guy puts his hand on Miu’s back and Miu jabs him twice in the stomach at 2:24:39.
2:24:39 Miu quickly jabs at somebody off camera, presumably the deceased since the deceased was stabbed in the heart and Miu appears to strike at that height.
2:24:40 Miu is forcefully shoved with two hands on his throat by someone off camera. Miu stabs this person reactively, but stays on his feet.
Miu then walked toward his original group, at some point he is near the women who originally confronted him. I speculate it is at this time he stabs the one woman in the side of her body, but the video is not clear. This is likely to be the attempted homicide charge that should stick since he could have easily avoided her during his retreat in my opinion.
The video is somewhat graphic, so I will not post a direct link.
search youtube for 9VaEsfrjlEc or Disturbing Video Shows Wisconsin River Stabbings That Left Teen Dead — Day 1