FAIRY TAIL BOX SET MANGA by Hiro Mashima

Lucy Heartfilia, a traveling Mage, meets Natsu Dragneel, a Mage looking for his foster parent, a Dragon named Igneel, with his best friend, Happy, a blue, talking and flying cat.

Shortly after their meeting, Lucy is abducted by Bora of Prominence, who was posing as Salamander of Fairy Tail, to be sold as a slave.

Natsu rescues her and reveals that he is the real Salamander of Fairy Tail and has the skills of a Dragon Slayer, a form of Lost Magic. He offers her membership into the guild, which she gladly accepts.

They, along with the armored Mage Erza Scarlet, Ice-Make Mage Gray Fullbuster, and Happy, become a team performing various missions offered to the Fairy Tail Guild.