All right, let's give this a go, then.
> "A Lunarian force has stationed themselves in Gensokyo, and they've been spying around for a while now. Apparently their mission is to capture and imprison Patchouli for supposedly letting a cosmic horror loose, and the fact that it was an accident AND that she fixed the problem doesn't matter to them. Master Eirin tells me it's a political move, but I still think it's wrong, so I'm looking for ways to help her. I know you and Patchouli have a special relationship, and Master Eirin also told me that Lunarians have, in the past, sealed away some of your brethren, so I was hoping you'd be willing to help."
> "The catch is that the Lunarian at the head of this operation, Watatsuki no Yorihime, honors the gods to the point where she can draw upon their power in a fight. With such power at her disposal, I am sure her mission will succeed, even if I try to interfere. If she did not have the gods at her disposal, however, I think I can stop her. I realize this is asking a tremendous amount from you, but would it be possible for you to somehow distract the other gods away from paying attention to Yorihime so I can prevent this injustice?"
> "Incidentally, if it matters, this Lunarian squad were the ones responsible for planting the UFO piece that started the war between Reimu and Byakuren."