^ That performance is still one of my fav of hers now that you mentioned it
I guess that ayu is also a good performer cause she is very close to the music she is singing. Being her who wrote the lyrics, she knows what every line is about, and so she delivers it in a strong way, be it a sad or happy song. She is not just performing on stage, she is presenting us a story about that song, and that's why she's such a great artist on stage imo