Linked from
The 8 pages that link to Oricon, each with the reason it gives.
Namie AmuroRelated: Oricon rankings documented the commercial scale of Amuro’s albums and singles.
Ayumi HamasakiRelated: Her chart records made Oricon a prominent measure of her commercial reach.
B'zRelated: B'z’s chart records are commonly measured through Oricon rankings.
Mr. ChildrenRelated: Its charts document the exceptional sales of the band’s singles and albums.
Nana MizukiRelated: Its rankings provide a measure of the commercial reach of her releases.