01 301.70 Kobukuro - ALL SINGLES BEST 2
01 294.40 Kanjani∞ - Aoppana
The NINKI ratings are the results of a POLL conducted by Oricon indicating degree of interest/degree of purchase intention in an upcoming release. Although the ratings are never a true reflection of sales, it does give a strong prediction about where the single/album will place in terms of popularity amongst the Japanese public. However, they are NOT an indication of how it will perform in terms of chart positioning and total sales for the week.
According to Oricon's note under the NINKI page, Oricon researches about 870,000 of its members by random sampling of 400 members in their 10s until 40s. 50 men and 50 women are chosen randomly to participate in each age group. (However, some popular artists have had NINKI exceeding 500, so we can only assume that Oricon has extended the polling to around 600/700 people now.)
Some other new releases next week (according to CDJapan listing):
Singles - FLOW, SPYAIR, Plastic Tree, Kishidan, Sakura Gakuin, MEJIBRAY, cinema staff, ORANGE CARAMEL, PURETTY
Albums - KARA, Ishii Tatsuya, Oda Yuji, Fujisawa Norimasa, Denda Mao, CORNELIUS
KARA Collection is not there, but I'm sure it's because Oricon sent out the survey earlier than the mini album release announcement. But of course, rooting for Kobukuro and Kana all the way! It'd be great if Kobukuro's album can get another million but realistically, it might be a bit too much to ask in this age of theirs.
And go go go Eito! (Though I personally thought the NINKI is a bit too high since I don't think this single will sell much but who knows lol). Also all the best to EXILE TRIBE, YUI, abingdon boys school, and THE RiCECOOKERS! XD
Source 1, 2