Natsu's POV:
Flashback
It was 2 years after Lisanna Strauss' death. Everyone in the guild was sad that they lost a guild member, a part of their family. Natsu was standing alone in front of her grave he was crying. He remembered why he is here in the first place. In Fairy Tail.
He remembered nothing of his origins. He only rememmbered the horiffic screams and fire everywhere but he did not know why or where.
He felt that he failed for not being able to protect Lisanna as her best friend. He wants to make sure this would not happen again not ever. So he decides to leave the guild for a while to become stronger and to protect everyone that he cares about, especially Mirajane. He deeply cares about her . But after that incident he just felt sad. He felt someone was calling him.
Present:
"Natsu!" Natsu snapped back at reality he sees Happy calling him
"Oh sorry, yeah Happy?"
"We were going to ask Lucy to come with us to an S-class job rememmber?"
"Sorry, i forgot now let's go ask her shall we?"
"Aye, sir" Happy said doing a salute
Back at The Guild
Natsu see's Lucy sitting with Lisanna. They have become Best friends after Lisanna came back from Edolas. Natsu was goin to greet her but his thoughts came back to Mirajane. He haven't talk to her since Lisanna died after Lisanna came back they still never talked to each other again. But he still cares about her.
"Hey Lucy" Natsu said earning the attention of the blonde girl
"What Natsu?" Lucy asked with a smile on her face
"Do you want to come with me and Happy on a 2 day S-Class job"
"Sure i can get use a little bit exercise after the Tenrou incident."
After they gave the sheet to Master Makarov. They packed up their bags and left the guild.