Lucy's point of view:
Finally, we've completed the 100-year quest, it took us almost several months, but we've finished it. A lot happened between the white mage, the diabolos guild with their black slayers and 5th generation dragon-eating stayers, this battle was awful, we had to face our own guild possessed by the white mage Touka, who was herself possessed by this white spirit. As for my comrades, we more or less gained in power but also in relationship, Gray finally offered herself to Juvia, this happened after the battle against the white mage, Erza talked to the guild's integrated master Jellal and Happy was hanging out more and more with Touka making Carla (or Charle) jealous, I was jealous myself, when I found out that she loved Natsu but in the end Touka was an exeed magnet Happy.
There were still the dragon gods, this step was the very principle of the quest, defeat those dragons and we got a wish, mine was clear, I wanted to get the key to Aquarius.
About the dragon gods, Aldoron the giant dragon was hard to defeat, Celene (the heavenly dragon god) was more friendly, we defeated her but she taught me several spells related to my heavenly magic, I can now merge but "Star dress" with three spirits and used heavenly spells a bit like Jellal's magic, we had to do a unison raid at 5 to seal it, the worst was Ignia, Natsu's brother.
It's been a week since we defeated Ignia, everyone was hurt, the worst was Natsu, full of scratches and scars, he woke up after 4 days, he's been avoiding me ever since, I don't know why, every time I come near, he orders me to leave, he barely eats his food.
I think the reason was that he was in a state of a mess.
Flashback, still pdv Lucy:
Because during the battle Natsu ate Ignia's flames, this time he had wings sticking out of his dowry, with these scales still attached, that appeared during the first battle against Mercuphobia (the water dragon). Natsu was out of control, he faced Ignia alone after a more or less balanced fight, Natsu fought like a beast, Ignia said he used only half his power, Natsu lost his flames and was quickly knocked down, me and the rest of the Natsu team, we attacked, even with four plus Touka by our side, we were neutralized by Ignia.
This guy threw several spikes at Natsu as a shame to the dragons, he threatened Natsu to attack the guild but he took wWendy by surprise and strangled her, it took Irene's intervention to stop this, but she disappeared due to lack of energy, Ignia got angry and threw a fire ready to kill us. However, Irene reappeared and hurt Ignia by blocking him with her magic, except that if he pushed Irene back, Natsu jumped on him to hold him down, except that Ignia understood that to get the best out of Natsu, he had to make him angry, so he threw his fire again and it almost reached us barely because Natsu had to end Ignia's days by twisting his blows.
A few seconds after the fight, Natsu had knelt down, her face helplessly looking at the brightly lit ground, I was shocked myself, Wendy was scared, and so was Happy because we were now witnessing Natsu's setting aside of her own half brother and killing him.
He screamed in rage, and his breath quickened, I knew I had to reassure him. I took him in my arms, "Natsu listen to me, stay calm.
"Lucy, I've, I've killed"?
"Natsu, you saved us again,
''No Lucy, I killed, I killed a person, it's against the rules of the guild, I killed, I'm a real monster as many villagers say, or people like Dimaria '' !!!!
Natsu, stop blaming yourself. "Serte was a murder, but you had no solution. Either it was him or us. He could have taken it out on the guild.
''Lucy, I'm such a monster'', I slapped him, and as I took him by the scarf, I said, ''Natsu, you're such an idiot, you can be brutal but you'll never be a monster !
You're really too important to me, I think.
He started to hug me and I did the same, we stayed like this long enough until a certain, stupid blue being came and disturbed the moment.
"You, you love
"Go away, stupid cat" and piss me off.
Natsu broke free and collapsed from fatigue, Wendy was still paralyzed by this passage, came to her senses and healed some wounds with what little magic was left.
End of the Flashback and still Lucy point of view :
After the fight, we would go to the nearest village to heal.
Now, Erza had decided that we were going to see Elseferia to have the guarantee of our wishes and the accomplishment of the quest, but two questions remain unanswered why Carla seems scared every time she sees Natsu and why he-if he was avoiding me, was he having nightmares.