One song from 2015 was certified Double Platinum this month for selling 500,000 copies: back number’s “Christmas Song.”

Three songs from 2015 were certified Platinum for selling 250,000 copies: Kiritani Kenta as Urashima Taro’s “Umi no Koe”, Hoshino Gen’s “SUN”, and miwa’s “Yozora.”

Seven songs from 2015 were certified Gold for selling 100,000 copies: E-girls’ “Anniversary!!”, AKB48’s “365 Nichi no Kamihikouki”, Crystal Kay’s “Kimi ga Ita Kara” and “Nando Demo”, Kobukuro’s “Mirai”, Superfly’s “Kuroi Shizuku”, and miwa’s “360°.”

Double Platinum (500,000):
back number – Christmas Song (11/18/15)

Platinum (250,000):
Acid Black Cherry – Yes (1/11/12)
Urashima Taro (Kiritani Kenta) – Umi no Koe (12/2/15)
SCANDAL – Shunkan Sentimental (2/3/10)
back number – Takane no Hanako-san (6/26/13)
Hoshino Gen – SUN (5/27/15)
miwa – Yozora. feat. Hazzie→ (8/12/15)
Madonna – Miles Away (4/30/08)

Gold (100,000)
E-girls – Anniversary!! (5/20/15)
Every Little Thing – Mata Ashita (11/12/03)
AKB48 – 365 Nichi no Kamihikouki (12/9/15)
Ohtaki Eiichi – Shiawase na Ketsumatsu (3/21/10)
Cousin – Fuyu no Fantasy (11/8/06)
GARNiDELiA – ambiguous (3/5/14)
Crystal Kay – Kimi ga Ita Kara (5/13/15)
Crystal Kay – Nando Demo (11/4/15)
Kobukuro – Mirai (11/26/15)
Sandaime J Soul Brothers – SPARK (4/24/13)
Janne Da Arc – DOLLS (5/19/04)
Superfly – Kuroi Shizuku (11/18/15)
Daijiman Brothers Orchestra – Sore ga Daiji ~Kanzenban~ (3/18/09)
miwa – 360° (2/20/15)
Jackson 5 – ABC (7/29/05)