Disclaimer: As much as I would wish to, I don't own Harry Potter or Naruto.
It was the end of the third year at Hogwarts School of Witchcraft and Wizardry for Harry and his friends. They had followed a black dog through a tunnel under the Whomping Willow to the Shrieking Shack only to find out that it was Sirius Black in disguise, who now had them at wand point.
Suddenly the door opened and in came Professor Lupin.
Instead of immediately coming to their defense, Lupin froze a moment, couldn't suppressed a tear escaping his eye and then lost all restraint.
He and Sirius opened their arms wide and launched into an embrace with the cries of
SIRIUS
REMUS
SIRIUS
REMUS
This moment was so emotional that through some accidental magic an illusion of a beautiful sunset appeared behind them.
If Harry, Hermione and Ron hadn't been so traumatized they would have noticed a thump just outside the door or Ron's rat Scabbers foaming at the mouth.
Thankfully they quickly passed into blissful unconsciousness.