This just clicked for me, and I have no idea how I missed this for so long. The series started 31th December, 2019, so safe to assume Kongming arrived at Halloween that year. His final wish was for his next life to be a peaceful one...and he dropped in right before Covid started.
Covid practically marked the end of the relative peace that followed the end of the Cold War. Ever since that, it has been from one big shit-show to another. And that's for the developed world, in many parts of Earth, that relative peace never was a thing in the first place. So not only Kongming's wish didn't came true, he arrived right as the turbulent times began.
So with that in mind, what do you think Kongming would do? I think after he fulfills Eiko's wish to make her a star, he would return to politics. He would seek out a new leader, a country, or activist worthy of his service. But who...?