Gray and Natsu were currently sitting in a Cold boring waiting room. Gray was reading a folder and Natsu was just looking how Mae crawled around. A door opened a a woman stepped out "Natsu Dragneel and Gray Fullbuster?", she asked and Gray got up. Natsu picked up Mae and followed after his boyfriend.

They sat down inside of the woman's office and the woman started talking "So, you guys are here for an adoption?", she guessed. Natsu was the first to speak up "Yeah."
"Is it for the kid you're currently holding or are you adopting one from an orphanage?", she asked. Natsu shook his head. "It's for her.", he said and pointed down to Mae
"Can I know her name?"
"Mae"
"Last name"
"Dragneel /Fullbuster", Gray and Natsu said at the same time.
"I'm the top in our relation. She should have my last name.", Gray used as an argument.
"But I found her.", Natsu said
"My cock is bigger."
"I'm more flexible", Natsu said.
After throwing some more pointless arguments Natsu said "Until yesterday. You didn't even want to adopt her.". Gray was taken back by this. He knew it was true and maybe that was a good reason to let Mae have natsu's last name. It had been his idea to keep the baby. And to adopt the baby. It was natsu's dream to have kids all along.
"So. Have you finally decided on a last name?", the woman asked the two of them to break the uneasy silence.
"Dragneel.", they now both said in unison.

The woman handed them he papers to make it official and Gray and Natsu both signed. When they took Mae home that night, she was officially their daughter. Mae Dragneel. Natsu couldn't believe it. He now officially had a daughter. A kid of his own. Maybe not biologically but she was his daughter. He felt happy in a way he had never felt happy again and hugged Gray "Thank you.", he said. He was thankful. Until yesterday, Gray had truly opposed the idea of adopting kids, having kids at all. But now they had just adopted their daughter. This was not the end. This was only the beginning of their big adventure of parenthood.

"Da-ddy. Say Daddy.", Natsu was saying to Mae. He tried to get her to say Daddy again. But while they were in the guild Mae's concentration wasn't really on Natsu but she was looking around to everyone and everywhere.
"How's she doing?", Erza asked Natsu as she sat down next to him. "She can't talk yet, but she's making noises that start to look like words. And she's starting to learn how to walk. Look.", Natsu said as he put her down with Gray and went a few steps back. He held out his hands and stimulated her to come towards him by holding put her little dragon plush. She looked determined when she set her first wobbly steps towards Natsu. She didn't come far, though. Cause after two of her steps she started falling. Luckily Natsu was there to catch her when she fell and she burst into giggles.

Every time Gray saw Natsu and Mae like this, home couldn't help but think that Natsu was just born to be a father. He couldn't help but feel guilty that he had almost denied him that thing he obviously wanted the most.

Erza sat down next to him and asked "Thinking about something?"

"Hmm. I feel guilty that I told him we weren't going to keep Mae at first and tried to deny him the thing he is now enjoying so much."

"That was then Gray. You obviously feel different about Mae now, don't you?", she asked the raven haired male. Gray nodded as he looked over to zhere Natsu was still trying to get Mae to say daddy and smiled "How can't I feel different about her now? She has really become a part of our family."

"She really has, huh?", Erza said as she continued on her piece of strawberry cake.