I’ve competed at the highest level, winning both the Pacific Tournament and the Asia League, so I understand the game deeply. With that background, I want to make it clear that what I’m sharing here is my unbiased opinion based purely on experience and analysis.
Suspicious (18:30) - It’s too much of a coincidence that he chose to use ultimate to get in the shrine instead of walking not knowing there are bombs there, but still not much of a proof for MH, so 50-50.
Very Suspicious (28:24) - The exact moment he jumped and the way he keeps on walking back to jungle and to the river means he is hesitating to do something. I think he knew that someone was there. The fact that he jumped in the right moment right after Riki killed the neutral creep makes it very suspicious since he has 0 vision in that area. Still, if he has a good map awareness it can be considered but nonetheless, it’s very suspicious.
100% MH (40:33) - This is concrete evidence for an MH case. The fact that he knew exactly where Riki is located after their engagement, the moment Storm jumped into Riki's location was 100% MH because Storm can just push bot lane together with his team but he chose to kill Riki without any vision. They don't have any detections in the area where Riki got killed. They didn't plant any sentry ward or use dust to reveal Riki.