*time skip – some months later*
Nayuki is currently playing with Tobirama, who hid "somewhere" in the gardens. Of course, she already knows where – she isn't a sensor for nothing. As always she draws the game out longer than needed and decides to look for him at some random places to hide. 'Who would've thought that one day I'm going to play hide and seek with the second Hokage?' She can't help but smile at that thought. After some time Nayuki decides to "find" Tobirama. She sneaks up to the bushes and looks down at the hiding four year old. "Found you, Tobi!", she chirps happily. A groan and a mumble of, "Oh man, how did you find me so fast, Nayuki-chan", are her answer. "Luck" ,she answers the boy. "I don't believe you!" "If you want me to answer, you have to tell me how you know when your father sneaks up to you every time" "I don't know…. I just feel it…" "That means that you're a sensor like me. We can find and identify people around us by their chakra signatures" "Do I learn how to control that from my teacher?", Tobirama asks her curiously. "I don't thinks so… DO you want to learn how to do it?" "Yes! Do you know how to do that, Nayuki-chan?" "Well, you should start by trying to feel farther away. When you have a decent area where you can feel chakra signatures, try to identify them. Let's see how far you can feel. You know what my chakra signature feels like, right?" "Yeah, I do. What about it, Nayuki-sensei?" "Sensei? Well, if you insist…. Close your eyes, concentrate on me and tell me as soon as you can't feel me anymore" "Alright, I'm ready"
Nayuki smiles at her charge, "Great, Tobi! You did great. Some more training and you're going to be quite a sensor…" Suddenly she can feel pain in her womb. Surprised she stumbles and grabs onto Tobiramas shoulder. He looks at her confused, soon it changes into being afraid as he can see her grimacing in pain. After another wave of pain she can feel that she's getting wet between her legs, meaning one thing – her water broke! Nayuki knows that she can't get back to the house on her own anymore. "Tobi, …. I need you to get some help …. I'm going into labor … " Tobirama nods and runs to the next chakra signature he can feel. "Otou-sama! Nayuki-chan is going into labor!" Butsuma looks at his son immediately and asks, "Where is she?" "In the garden" Butsuma turns to the young shinobi standing beside him and tells him, "Yahiko, get me a midwife!" The young man answers short, "Hai, Bustuma-sama!" and runs off while Butsuma sprints into the garden.
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Butsuma paces in front of the room Nayuki is giving birth in. He can hear her cries. Especially, because his first wife died in childbirth, he's restless. Hashirama, Tobirama and Hanabi with Kawarama are sitting beside the door. Tobirama looks at his father and asks, "Is she going to be alright?" "I believe so", Butsuma assures him.
After some hours the cry of a child erupts from the room. Butsuma doesn't wait till he's allowed to go in. He storms in and gets to Nayukis side. "Are you alright, 'Yuki?" "Hai, I'm just a bit tired. Can I hold my baby?" The midwife comes over – a little bundle in her arms. She looks at the new parents and tells them, "It's a healthy little baby boy" Nayuki takes her baby into her arms. Butsuma looks at his smiling lover and child and asks, "Say 'Yuki, is it alright to name him Itama?" She glances at him and agrees, "It's a beautiful name…." "Well, then. Welcome to the family, Itama Senju" Pride shines in his eyes as he watches Nayuki cuddling with their son. Soon Hashirama and Tobirama come in to greet their new baby brother. Even Kawarama, who was brought in by Hanabi, has great interest in his new sibling. He talks to him with his cute baby talk, sometimes even mentioning "mama" or "dada".
For the moment they're a happy family but Nayuki knows every child in this room is going to fight in the war with the Uchiha sooner or later. Hashirama already goes on missions regularly, Tobirama will in about 2 years and Kawarama just a little bit earlier than the baby she just gave birth to. She has no illusions – she knows from her history lessons in the academy that Itama isn't mentioned as a brother of the first Hokages, neither is Kawarama. That means they both die early, fighting against the Uchiha. There is no way around it …. No, as a mother she'll refuse to lose her babies that way. Before she let's that happen, she'll even fight at the frontline herself!
She will change the future!