User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-27083298-20181219164921/@comment-37165251-20181219165743

You mean to make it more interresting for him (Indra) ?

Possible. I mean as a God he likes a good Challenge (even if he is shure to beat him) and if he wins against a strong Issey his Status will become even higher. And others that would eventually opose him would think twice about it if he beats a very Strong Red Dragon Emperor.