Natsu Heartfilia

Lucy's memory of Natsu was wiped by an unknown person. Natsu's identity had to be hidden from Lucy because the person was worried they would find their grandmother. During the time when Lucy first joins Fairy Tail, Natsu reveals his identity to her from looking at a letter from Jude Heartfilia.

As Natsu's memories return to him, he becomes more scared and aware of his safety when he's not with Lucy or Wendy. He doesn't like going anywhere without Lucy or Wendy. When he went to Edolas, he saw his mother but she was different somehow. She looked like Anna when she went to Lucy's apartment (injured). As they revealed their past, Natsu and Lucy had a peaceful morning before running into an injured Anna and taking her to Wendy. Natsu stayed behind sleeping until he had a dream about his mother and ran out to Lucy crying. He kept crying until Carla helped him calm down by letting him by pulling her ears.

Just then, Natsu ran out of the town after Wendy hummed the tune his mother sang to him and Lucy which made him miss her a lot. After Lucy and Wendy follow him, Anna finally made a recovery and talked to Natsu about his mother's death. He finally calmed down because of it and he saw Happy when he got home. Natsu got scared after seeing him.

Happy was worried about Natsu as Natsu still screamed every time he saw him as Lucy and Anna smiled and laughed a bit. During the time in the room of the Lumen Histoire or Fairy Heart, he met Mavis Vermillion and she helped Lucy when she died. When Lucy's projection came by, he ran into his twin sister who smiled at him. For some reason, his twin sister calls him big brother.

During the changeling spell, Natsu was switched with Zeref after Mavis read the spell. Natsu and the others met Eza (Erza's sister). After Natsu switched back, he played with Wendy and Mirajane.

Natsu was confused when he first saw Lucy but his memories were back when he remembered his own grandmother. His memories were blurs until Zeref told Natsu of Anna.