I had something like acute abdomen before & trust me it's terrible &
WORST than having a common cold
a common cold wouldn't really put a huge dent on an artiste . At most he/she will lip synch if he/she's due to perform in a live event
a while back ago , YUI had to lip synch when she was on MUSIC STATION to promote Rolling star & that was the only time she did so as she was down with a cold
anyway , you make it sound like as if otsuka wants to get ill in the 1st place ~_~
ゾッ婚ディション/LUCKY☆STAR 1st day sales & position - #3 with 5,367
http://www.oricon.co.jp/rank/js/d/
wow this's terribly low :O