On 10/16 Kousuke wrote an upset/depressed blog entry. It was about his little brother dying very suddenly. I was sleeping and by the time I woke up he had erased it so I can't tell you what it might have said. He wrote a 2nd blog on 10/16 explaining that he didn't mean to worry everyone and that he deleted the upset entry.
Ai's and Takaki's latest blogs are about the death as well.
Kousuke's little brother was a part of all their lives and they seem quite struck by the sudden loss.
Please send Kousuke (and the other members) some love 'cause he probably needs a lot of it right now.