Astral Spiritus - S5.E33

The Fairy Tail cavalry arrives in Astral Spiritus to help Natsu and the gang try to stop the renegade Celestial Spirits from gaining perfect freedom at the cost of only having 12 days left to live. However, when the Spirits enter their respective gates, the Fairy Tail members split up to follow them for one last fight in the space between the Human World and Celestial Spirit World.