Natsu earns a book of magic spells as a reward for his first solo job. He offers it to Levy who teaches him a spell in exchange. A spell that will let him into someone else's dream. All Natsu wants is to prank Gray, to challenge him to a fight when he least expects it, but Natsu could never have imagined what Gray dreams of... Gratsu Week 2019 Prompt: Dreams and Breath(e)