Ink and Error. Two monsters that have totally opposite views on reality. Destroy and Create. Most wouldn't expect them to have any form of relationship other than negative. And that is relatively true for the most part. However. They have children. Not made the way most think of, but a much more unique way.

During fights where the ink and strings continuously combine and clash, they morph, and out comes a new soul. Technically, it is their child. So far, they have PaperJam (PJ) and Gradient. However, they soon got a new addition after a battle in a neutral au. You.

Error was usually the one watching you three since Ink, while he was technically a good guy, had the memory and morals of a rock. They don't nesiccarily have any relationship, but they keep fighting to a minimum around the kids. Just for their sake.