>>53627121I don't understand what you mean?
Do you mean a second person pov fic that still keeps at it even when it goes outside of the initial pov character? Because the only fic I've seen do that is Menhera Wrangler's SPECIAL chapter at the end where it tells it in 2nd person despite it being in Fubuki's pov.
Everyone else usually switches to using third person when they get out of the reader insert pov.