Let's try this, all the women of Fairy Tail are in Mermaid Heel, Natsu, a courier, has a chance encounter with these Mermaids...I think we see where this is going. NatsuxHarem.
Fairy Tail - Rated: M - English - Adventure/Romance - Chapters: 60 - Words: 315,501 - Reviews: 1100 - Favs: 2,163 - Follows: 2,162 - Updated: 8/21 - Published: 2/3/2014 - Erza S., Natsu D., Ultear M., Kagura M.