Lucy opened her umbrella, protecting her son from the harsh rain as she came back to Earthland. It's been 10 years ever since she left in the middle of the 100 years quest. She walked through the rainy streets of Magnolia, hoping that Fairy Tail was still there...
The guild was still there, so she decided to open it. Every guild member suddenly gawked at her, some have tears in their eyes...
"I'm sorry if I leave without a note," Lucy bowed.
"LUCY~!!!"
Every old guild member started to hug their lost comrade. Erza couldn't help but cry too, Gray patted her head, Juvia still kept her grudge against Lucy but she's happy that she came back, Natsu and Happy were exaggerating at her, Mirajane, and Lisanna greeted her with a big hug, and the others just cheered...
"Wait... Who is that, Lucy?" Master Makarov asked, pointing at the asleep toddler between Lucy's arms.
"... My son, Master... Deckard Heartfilia."
The whole guild gasped at her proclamation, making Lucy lower her head at the embarrassment. Mirajane placed a hand on Lucy's shoulder, assuring that they understand. Makarov wanted a private conversation with Lucy, so he brought her to his office...
"Where have you gone to, Lucy?"
Lucy looked at her child, "I was... Teleported to another world, Master Makarov. And, that world is called Twisted Wonderland.
So, Lucy told everything to Makarov. They had an agreement that no one must know who is Deckard's real father because of the safety of the future. Knowing it would take risks on keeping this secret, everyone in the guild believed that Lucy was locked up by a dark wizard and made her pregnant...
"Lucy, since you had a son, don't you think that you need to buy your house? The Heartfilia Konzem?" Makarov suggested.
That explains why Lucy had retrieved her title as the Countess of the Heartfilia Konzem, as her son will be the future successor. She also asked for the Celestial Spirit King to erase the memories of her Celestial Spirits, who traveled with her in Twisted Wonderland. She also had erased the memories of the people who met her in Twisted Wonderland, but she wasn't sure if it worked...
But, all secrets will be revealed, even if it isn't meant to be, right?