Seems like the backing dancer dislike has transferred to Timmy. Ayu likes to give more exposure than many singers would to her team in PVs and concerts so this is only natural. I haven't heard Timmy rapping but I love his backing vocals-it is a refreshing change to female backing/choirs. When Ayu likes something she uses it a lot and I like what I have heard of Timmy's composing so far. At least she does try new things - there are complaints if she does and complaints if she doesn't
That Ayupan thing looks cool too!