Situation: I don't want them to meet in a bar or tavern or whatever Jun's regular haunt is called. Do something unexpected. Perhaps Jun has had to go through some hoops to catch whatever latest is, or maybe it's personal mission, during which she meets Piandao. Or post-series, the two are put together and go on missions, against residual militant rebels against the new 'so-called peace' or they just take down bandits. I'm not really picky as to the specifics; I just want it to happen. Those are just ideas.
Please try and keep it to a T, and no smut, if you would. I don't see it as vital whatsover to a story.