Gundam 00 dj - Hoshi ni Negai o

Pairing: Setsuna x Lockon Setsuna blacks out during a fight and when he wakes up he finds himself in Lockon's apartment four years into the past. This has happened to Setsuna before and fulfilling his heart's desire is what sent him back to the present. But for some reason he can't figure out what his heart's desire is this time.