Unicorns are real and they do in fact live near rainbows. Rainbows that exist everywhere even if humans can’t see them. That is until the rain, and holy light of the sun emerge simultaneously. In reality, rainbow light re-energizes the immortal powers of a Unicorn and they use rainbows as a way to traverse great distances about the Earth. The mystical Rainbow Network is a supernatural travel method used by quite a few paranormal entities who almost always fall within the forces of good.
Unicorns often run across Leprechauns since the lucky Irish fellows like to hide their gold at the end of rainbows. Both paranormal creatures get along with each other as they are beings of good luck. Leprechauns sometimes earn the privilege of getting to ride aloft the noble Unicorn. It is said that anyone merely gazing upon a Leprechaun gallantly riding a Unicorn will automatically gain immortality, along with eternal good luck. This is due to it being one of the rarest magical sights on Earth. A sight whose light literally transmits awesome power into people!