Fairy Tail Season 9 Episode 51

Dearest Friends

Acnologia's spirit is immobilized by Fairy Sphere's power, allowing Natsu to destroy him with the Dragon Slayers' combined magic, which also destroys Acnologia's body. With Acnologia's death, the Dragon Slayers are released from the time rift and reunite with their friends. One year later, Fairy Tail attends an award ceremony for a novel Lucy has published about her experiences at the guild, with Lucy recounting how her friends' lives have changed since the war. The partygoers spot Mavis and Zeref among the crowd, but the two appear to be different people with different names when they meet and befriend each other. The next morning, Natsu and Happy invite Lucy on a job, which reminds her of all their shared adventures as she tearfully thanks them for influencing her own life; Natsu dismisses the sentiment, but assures her that they will be together regardless. The three then accompany their team to embark on the guild's century-old "100 Years Quest".