YUI just performed at Music Station, she sang Good-bye days.
YUI also talked about her reason of taking hiatus and what she's planned from now on.
Took this from http://headlines.yahoo.co.jp/hl?a=20121123-00000101-spnannex-ent
Q: "What is the reason of you dediced to have hiatus?"
YUI : "I've been doing a lot for 8 years, however I've found something new that I want to try and challenge"
Q: "So, it means this is you last performance as "YUI"?"
YUI : "Yes, maybe. I think it would be nice if I could active again in music next year with new form"
Q: "it means, your hiatus will not be so long?"
YUI : "Of course. Please keep supporting me"
it's up to you how to react to the fact that "YUI" will no longer as "YUI". But, in my opinion, it's only the matter of stage name, whatever the name or music style when she's back, I personally will stay by her side, support her.