The clubs competed in the quadruple round-robin format for the top two promotion slots.
Farther, the third-placed finisher participated in the Pro/Rele Series for the promotion.
Of these clubs, Kashiwa Reysol, Tokyo Verdy 1969, and Vissel Kobe relegated from J1 last year.
Thirteen clubs will play in quadruple round-robin format, a total of 48 games each.
The clubs are ranked by points, and tie breakers are, in the following order: A draw would be conducted, if necessary.