One song from 2018 was certified Platinum this month for selling 250,000 copies: Suda Masaki’s “Sayonara Elegy.”

One song was certified Million this month for selling 1,000,000 copies: Ai Otsuka’s “Planetarium.”

Million (1,000,000):

Ai Otsuka – Planetarium (9/14/05)

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Double Platinum (500,000):

Kiroro – Mirai e (2/21/02)

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Platinum (250,000):

Suda Masaki – Sayonara Elegy (1/7/18)

Ken Hirai – Grotesque feat. Namie Amuro (4/23/14)

Hirose Kohmi – Gerende ga Tokeru Hodo Koishitai (2/26/03)

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Gold (100,000):

UVERworld – Itteki no Eikyou (2/1/17)

Ken Hirai – even if (8/5/04)

Momoe Yamaguchi – Ii Hi Tabidachi (1/24/10)

Justin Beiber – Love Yourself (11/13/15)

Zedd – Beautiful Now (5/30/15)

Peabo Byrson and Regina Belle – A Whole New World (12/26/05)