After an assasination attempt, Lacus fell into a coma but her consciousness was transferred to a spirit form of herself. She can see, hear, and feel other people but other people can't notice her. Kira's true feelings will also be revealed.

"Our lives did not follow the way we wanted them to be. We were both forced to fight to protect mankind together. I guess it's safe to say that fate brought the two of us together. Whether it's a curse or a blessing, I don't care. As long as we're together, nothing's ever gonna go wrong." Post-final mission and pre-epilogue of Super Robot Wars J. Toya x Festenia

What if Kira didn't really see Flay as herself? What if Kira was seeing her as someone else? This takes place after Kira dumped Flay. Kira X Lacus Oneshot.