Got this idea form a song and I also don't like Nalu so this was a perfect story. I hope you enjoy
Nobody in the guild new much about Natsu' past other than the stories he told about Igneel; nobody needs to know about Natsu' past, he ever came up in conversation and no one never really talked about their pasted so no one quested Natsu' past; also, very one thought his past was bright I mean he does smile all the time so no one thought Natsu had a really dark past. And that was the way Natsu liked it no questions asked and no need to give answers.
But once a year Natsu always disappears for two weeks without telling anyone where he is going or why he leaves alone.
Natsu slowly opened his eyes 'that damn dream again.' Natsu thought as he climbed out of his bed he looked at Happy he was still sleeping in his fish covered bed. Natsu sighed and walk to the door his hand rested on the door handle and his eyes lock onto his calendar that hangs by the door red X's marked the days that have past, ' August 15th it is that time of year already.' Another sigh escaped into the silent room. Natsu slowly opened the door and walked out into another dark room.
"Hey, Natsu do you what to come on a job with us!" Lucy jumped up and down waving a job request in front of Natsu.
"Sorry Lucy but I can't," Natsu answered, Lucy smile disappeared and her cheeks puffed out.
"Natsu I need to pay rent!" Lucy screamed but she quickly calmed down, "it's not like you to refuse a job is there something wrong?"
Natsu just gave one of his famous smiles, "No there's nothing wrong I just can't go. Why don't you go on the job with Erza and Gray?" Natsu said walking to the bar to get some food and ending their conversation.
'I wanted to go with you.' Lucy thought as she stood there staring at Natsu laughing and talking with Mira.
"Don't worry about it Lucy Natsu doesn't take any jobs this time of year," Erza said putting her hand on Lucy's shoulder.
"What do you mean? What is going on this time of year?"
"Oh, that's right; well Natsu disappears for two weeks this time of year," Gray said looking over to the fire dragon slayer.
"Where does he go?" Wendy asked holding Carla to her chest.
"No one knows," Erza said joining Gray at looking in worry at the dragon slayer.
Master's office
"Master do you know where Natsu goes when he leaves the guild this time of year?" Erza asked.
Master Makarov just shook his head, "I am afraid I do not know; he gives me excuses on where he goes when I ask." He sighed, "I am worried what is happing to Natsu these two weeks he disappears… this year I would like you to follow him and find out where he goes."
"Gramps; we have tried that in previous years but we always lose him or he finds us following him," Gray said also a little worried about their fire dragon slayer.
"This year I asked levy to find a solution to that problem," Makarov said, he got up and walk over to a metal box that sat by the far wall. "Here take these they will help mask you're sent from Natsu." He said handing each of them a black cloak that seemed to disappear and reappear in their hands.
"This cloak will keep you invisible to the outside world only you guys will be able to see each other and also this cloak will mask your scents form Natsu as long as you are wearing it. Now Natsu leaves tomorrow so be ready and doesn't tell Natsu anything." He said mostly looking at happy who hide behind Lucy.
The next day team Natsu (minus Natsu) woke up really early to meet Happy in front of the guild.
"Happy has Natsu left the house yet?" Lucy asked, hoping they have not missed him yet dooming the mission before it even started.
"He was finishing up packing when I left." Happy said landing in Lucy's arms. The group started to walk to the edge of the forest with their invisibility cloaks on. Before the group entered the forest Natsu walked out warning his usual clothes but he didn't have his backpack or any bag.
"I don't get it he packed a whole suitcase why-" happy started to say but a cold hand was clamped over his mouth.
"Shhh, we don't what Natsu to hear us," Gray said in a low whisper. The group followed closely behind Natsu and again they were surprised that Natsu was walking to the train station.
Natsu POV
Why do I get the feeling that I am being followed? I thought to myself as I walked to the train station. Stepping on the train I sat close to the back of the train and sat down the feeling that I was being followed but looking around the train car I did not spot anyone the stood out as suspicions; so I tried to get comfortable for a long and painful train ride.
Dream
"Natsu can ask you something?"
"Umm…" Natsu answered. He sat under a cherry tree on a warm summer's day, next to him was a beautiful black-haired girl she was wearing a dark blue dress that complimented her ocean blue eyes.
"What would you do if I disappeared?" she asked her head resting on her hands as she looked you to the cloudless sky.
"I would travel to the ends of the earth to find you," Natsu said still not opening his eyes, thinking nothing of the question.
"What would you do if I turned evil?" this time Natsu opened his eyes I turned to face the beauty.
"What is with all the questions? Mist."
"why do you call me misty my name is Kasumi," she said to Natsu' nickname for her. Natsu gave a short laugh causing the black-haired girl to glare at him.
I know what your name is! Kasumi meaning mist. It is a beautiful name." Natsu said not at all intimidated by the glare he was reserving.
Kasumi sighed "just answer the question Natsu." She asked again and Natsu' smile disappeared.
"What is this about?" Natsu asked dodging the question again.
"You love me, don't you?" Kasumi asked looking to the sky.
"Of course, I love you! Mist what is wrong?" Natsu said sitting up and grabbing the girls' hand.
Kasumi turned to look into Natsu worry stricken eyes, "if I ever turn evil I what you to end my life."
"What! No, I would never kill you I love you!" Natsu yelled, he did not know why the love of his life was asking him to kill her.
"Natsu please, if I go to the dark side I want you to kill me not some stranger… I what to die as me, not as some monster."
"Why are we talking about this? If I did not know any better I would think that you were going to do something foolish and could get you killed." Natsu said his hair shadowing his eyes and his voice was low.
"Natsu…"
"Answer me this do you love me?" Natsu cut her off his voice still low.
"Yes of course I do. but-" she tried to say but was cut off again.
"Then why would you what to leave me to do something so dangerous. Why are you asking me to kill you I get that enough from my brother? So why do you what do something without asking me? If something is bothering you, then come to me I will help you; you know that so why?" Kasumi closed her eyes and looked away from Natsu, she knew that she was hurting him but this was something she had to do on her own.
"I'm sorry Natsu but I can't let you help me on this. I don't what to hurt you, all I ask if something goes wrong I what you to be the one to end it before I do something I don't want to do," she said Natsu did not answer, he nodded it hurt him but he knew he was going to have to trust her to handle this on her own.
Dream ended
I woke up from my dream shaking my head I looked around the train car some people were asleep others were quietly chatting to themselves, and that is when I sensed it, Lucy, Gray and Erza's magic, it was really faint but it was there. I got up and walked around the car, I searched the sets not finding them I turned to go sit back down when my eye caught something shimmer in an empty seat; walking over to it I lost sight of it for a second then it appeared again but this time I some skin. I brought my hand down to lift up the shimmery fabric to see Lucy sleeping. 'Was this why I thought someone was following me? Levy probably made this for them so I would not notice them flowing to me! Damn it.' The train came to a stop at the town I needed to get off on quickly putting the fabric back in place I walked off the train telling the conductor to go back to Magnolia I even paid off the extra trip because it was supposed to be the last train stop of the day. After thanking him I put on my hood and walked into the town I haven't seen for a whole year.
Ok I know it was a short chapter but I just wanted to set things up for this story next chapter is going to belong. This story I have wanted to do for a long time so I hope you like it!