Ai and Mako

From Freepedia

In the third season of the popular anime series Digimon, Ai and Mako are the sibling pair who were destined to be the tamers of the rogue digimon Impmon. Unfortunately, being far too young to understand the duties of a tamer, they treated him as an object with which to argue over. The discouraged Impmon fled his toddler trainers and went off to become involved with the other adventures of the series.

Much later in the series, Impmon returned to find Ai and Mako deeply ashamed at how they had acted, begged the digimon for his forgiveness. Impmon accepted and they became a family once again. As Beelzemon had to take up arms against the threat of the D-Reaper Mako provided him with a toy gun, which later morphed into a very powerful rifle, and Ai provided a kiss to the taken-back digimon. With that he raced off to play a major role in the last few episodes of the series.

Not much is known of what became of Ai and Mako after Impmon returned to the Digital World, but it is assumed that they were eventually reunited.