[en] At the J-PARC Main Ring (MR), two septa, four kickers and three bump magnets are installed for beam injection. In the first commissioning run, however, a new injection scheme, which does not use the bump magnets, is adopted. The 'without bump' scheme is simpler than the normal 'with bump' scheme. Although the physical aperture in injection section of the 'without bump' scheme is smaller than that of the normal scheme, it is applicable to the commissioning run because the injection beam emittance of ∼15 π mm-mrad in the commissioning run is much smaller than the nominal injection beam emittance of 81 π mm-mrad for the full beam power. Compared with the normal scheme, the 'without bump' scheme requires kick angle of -10% by decrease for each kickers, bending angles of +0.258% and +8.386% by increase for the first and second septum, respectively. (author)