It seems that Mion had to remind Nakai san, that they had met before (please see above post 'Mion chan at 7歳', and then watchSomeone re-upped it. :thumbsup
this performance on a recent Utage! show, especially at the end, when Mion is re-introduced to Nakai san)
【UTAGE9/15】④セーラー服を脱がさないで(おニャン子クラブ)/AKB48
(http://www.youtube.com/watch?v=Zy4tjeW915E)
http://www.youtube.com/watch?v=i_371icJ-jU&sns
http://www.youtube.com/watch?v=rjlZy4Wude4
http://www.youtube.com/watch?v=OV5icHFr7DE
http://www.youtube.com/watch?v=2SgIWqB-Ypo
The Nonfiction - Mion Mukaichi - AKB48 Senbatsu Sousenkyo Kondo Koso SP (Eng Sub)- http://uelectrifymylife.tumblr.com/post/155320983232