01 82.60 MAXIMUM THE HORMONE - Yoshu Fukushu
01 121.20 Yamashita Tomohisa - SUMMER NUDE '13
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.)
More new releases next week (according to CDJapan listing):
Singles - Amano Haruko (Koizumi Kyoko), PASSPO, BABYRAIDS, HOME MADE KAZOKU, Rake, JASMINE, OKAMOTO'S, Kota Shinzato, Power Spot, Gendai Asymmetry, Sel'm, the Raid., TAKA, Crack6, Kaya, Sarasa Ifu, The SALOVERS, Cyntia
Albums - Arai Yumi, The Sketchbook, JK21, HINOWA, Goose house, Sadie, SEX-ANDROID, Led apple, BREAKING ARROW, NO House, Katahira Minoru, inori, Dog in the Parallel World Orchestra
Among the new releases, Amano Haruko (Koizumi Kyoko)'s single which is also a song from the hit NHK asadora Ama-chan, and Arai Yumi's collab album with Studio Ghibli that includes the current digital hit Hikouki Gumo which is the theme song for the new Ghibli movie Kaze Tachinu, both which are not in the NINKI but have been doing well on online charts seem likely to end up in the top 10, and I won't be surprised if they even reach top 5 or top 3.
Source 1, 2