He is talking about Iwata Haruki, but you can see some old pics (Chisato, Nakky, Haruka and Karin)
You will remember Haruki if you saw 1974, she is the girl with the 2nd nicest smile xD
—Chisato Blog Digest (2012/12/26)—
Edit: Chisato updated!
She is late but she wish us Merry Christmas.
She couldn´t take part in her family Christmas party because she had Hello concert rehearsal from morning to night (when she finished it was 26 T-T)
She finished the rehearsal soon so she is watching C-ute DVD ^^ She thinks she isn´t good at dancing and singing, obviously it´s not true