A Long Mission- Gratsu.

After the Fairy Tail guild receives a peculiar request from a unknown agency, they must select two Fairy Tail guild members to act as a couple to gather all important information regarding a secret company operating in very constricted areas of Magnolia; their targeted audience and purpose seemingly centred around 'gay' couples who needed to escape the demanding expectations of society, Gray and Natsu are -selected by Lucy and various other members- seen as the desired two required to complete the mission successfully and safely with their evident strength. Lucy, noticing the suspicion surrounding the request tags along (with Erza) to gather as much intel as humanly possible. While Gray and Natsu proceed with the mission, Lucy and Erza work on the side lines investigating the client. As the mission progresses, Gray and Natsu begin to discover feelings they didn't even realise they held. Will it become too much for the conflicted couple, or will they embrace their newfound feelings and take on both of the powerful agencies before them?