When the Korn tour started in 2017 I didn't really notice Yui's fatigue. She was mostly the same apart from the fact that she had gained weight, which was very pleasing because she was unhealthily skinny before. The rest was the same.
The photos before and after the shows really showed not only Yui's but all of the girls' tiredness. It really made me mad because I knew that the management were just working them so hard.
When the footage of the Five Fox Festival was released, Yui was so tired. Her dancing was very weak and she didn't smile as much as she used to. Compared to Moa and Su, she was extremely worn out.
Sometimes I see people saying that Yui 'isn't as good' at dancing as she used to be and people constantly comparing Yui and Moa's dancing abilities which I find so rude since they are both bursting with talent.
I think Moa and Su are able to handle the amount of work they do better than Yui can. Moa especially. They didn't look tired while dancing one bit during the FFF. The last time we saw Yui look strong was at the Tokyo Dome.
I was so worried for Yui's health. I was so glad when the shows were over as I knew she would finally have a break.
When she comes back I hope we see her looking healthy and happy again. Being able to smile more and dance to her full ability. There is nothing more that I want than for her to be happy. I hope she is enjoying her break and as much as I miss her, she really needs a rest and yes a year long one is probably good.