User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-2601:8C:601:5692:6CC6:6C09:CEA1:B2ED-20180321212211/@comment-2601:8C:601:5692:6CC6:6C09:CEA1:B2ED-20180322051726

Oh, and Ise's "training" under Indra was focused on powering up his dragong god transformation by basically drinking a simplified version of Amrita. As it is still a drink meant for gods, it was mostly poisonous for Ise despite his survival, but it did allow Chichigami to directly speak to him. Indra only trains Ise because it would make the tournament more interesting/amusing.