Disclaimer: I do not own Naruto.
Being a dad means a man. In all situations
Gaara knew he was a man. He was a man's man literary. He was the kazekage so of course he was strong. But as soon as he found out Neji was carrying their child he realized what it truly meant to be a man.
Being a man meant having Neji go from sobbing in your shoulder to throwing a lamp at your head because mood swings were getting to him. He knew being a man meant you were able to handle having the life squeezed out of your hand.
But he didn't being a man meant having to change a diaper. Neji was out on a mission and wouldn't be back until tomorrow. That left Gaara in charge of baby caring. The whole day Gaara was cursing the fact that Neji didn't want a nanny. 'A baby is easy to take care of my ass.' Gaara thought bitterly. He didn't have a motherly instinct, in fact he was pretty sure that he didn't have a fatherly instinct as well.
But here he was in front of the baby changing station in the white nursery room his son screaming way too loud to be humanly possible. Even Shukaku would hide in fear of changing a baby's diaper. "Zen will you please stop yelling so daddy can change your diaper." There, that sounded comforting enough. Tomo stopped crying and looked up at Gaara with big turquoise eyes. "Thank you." Gaara removed the diaper like the nurse showed him how. The smell was overwhelming but he could do it.
He was a man.
Authors' Note: I can picture Gaara and Neji having three kids. Gaara would probably need two to get used to loving and taking care of children and Neji would have on because of the branch family. If he wasn't part of the branch family then he would definitely have two.
Here they are from oldest to youngest.
Tomo-boy
Seiko-girl
Unmei-girl