Funny to me how people actually buys it when the author tried the ultimate common trope 'its actually the MC' just cs of some resemblance between ozuno and the sennin 😅
All while also plainly bringing both the monk (azuno-no-miya) and the sennin on the same panel side-by-side, with the same hairline, same eyebrow line, same jawline, same torso build, and more importantly same third eye albeit the cross which the sennin have.
Now with this chapter i came with new assumption that maybe the sennin is not trying to kill koto-sama, cs there's a possibility that this sennin is a future self of the monk from a timeline where koto-sama already died by then from the curse mankind gave her. If so then its clear to me now that this sennin actually tries to save koto-sama, reasoning:
1. Its clears the reason why the sennin try to meddle with mankind political affairs, trying to force his past self (the monk) on becoming the king. Why? Because koto-sama still alive in this timeline, and by making his past self a king now, he could make the king pass a decree to strictly worship koto-sama and forbidden people to have bad prejudice towards her powers. Which in turn would lessen or even lift the curse that mankind gave her.
2. Every calculating person ever will always prepare a backup plan, and that seems just right with the sennin intention to make ozuno a sennin greater than himself. And it comes along nicely albeit ozuno is still refusing to become one. As the sennin said, ozuno has great potential to become one and one that fits his backup plan if he ever does perish, that is to become a sennin that could continue his legacy on trying to save koto-sama. We all know how much length ozuno will take to try and save her, now imagine if he actually became a sennin and have a power equals that of a kami. Maybe then he could get his way around kami's treasures more easily and use their powers to try things out and save her.