In the following days, Chiga stayed at home with Kaguya, while Minato and Kushina occasionally visited to check on her.
Though a peak Six Paths-level expert, Kaguya genuinely enjoyed the warmth of being cared for by others. From the day she arrived on this planet, her life had been filled with anxiety. After giving birth to two children via the God Tree's power—both infamously unfilial—her current life felt like an entirely new experience.
That day, Kaguya rested on the sofa, gently stroking her belly. She spoke softly to Chiga, who sat beside her,
"Chiga-kun, I feel the baby moving inside me!"
Chiga pressed his face against her belly, listening closely. Suddenly, a soft, milky voice called out,
"Dad!"
Chiga froze, utterly stunned. He straightened up abruptly, startling Kaguya, who asked anxiously,
"What's wrong, Husband-kun? Is something wrong with the baby?"
Chiga turned slowly toward her, eyes wide,
"Didn't you hear that?"
Kaguya shook her head, puzzled,
"No. Did you mean the baby just now?"
"She called out 'Dad!'"
"How is that possible? Black Zetsu!"
Black Zetsu dashed in from outside, holding a broom.
"Hey! I'm here, Mom! What do you need me for?"
Kaguya asked, incredulous,
"Did you just hear Husband being called 'Dad'?"
"No! I've been sweeping snow outside!"
Chiga raised a calming hand, pressing his face to Kaguya's belly once more. Softly, he said,
"It's true. The child in your belly just spoke. As expected of my child, she can call out 'Dad' even before birth!"
Black Zetsu stared in astonishment.
"Nani? Something like this actually happened?"
Chiga gently rested his hand on Kaguya's belly.
"You should be able to feel her. Are you trying to come out?"
Suddenly, a pair of tiny hands pressed against Kaguya's belly, reaching out as if to touch Chiga.
Kaguya's eyes widened in surprise. She grabbed Chiga's shoulders urgently.
"Chiga! The child is coming!"
Chiga held Kaguya close, whispering,
"Don't be afraid, I'll—"
Before he could finish, a door appeared on Kaguya's belly. It slowly opened, and a little girl, who seemed about one year old, floated out.
The three witnesses—including Chiga—were left utterly speechless. Kaguya's body immediately returned to its original state. Losing her figure after giving birth was never a concern for her.
The little girl floated directly into Chiga's arms. Subconsciously, he hugged her, noting the snow-white hair cascading down to her waist, concealing her bottom perfectly. Her skin was fair and soft, like the finest porcelain.
Most striking of all were her blood-red eyes. Six black tomoe in each eye formed petal-like patterns, emanating an intense, otherworldly aura. Chiga quickly realized that this must be a mutated Eternal Mangekyō Sharingan.
The recent emergence of the door was clearly a manifestation of the Door-Door Fruit's power, proving that the child had inherited a (some) Devil Fruit ability Chiga had absorbed.
Before he could dwell further, the girl's voice broke through, calling again,
"Dad!"
She then called Kaguya,
"Mom!"
Kaguya's eyes curved into happy crescents. She took the child from Chiga, rocking her gently, using techniques she had learned from Kushina. Though no longer an infant, the child clearly delighted in the closeness. Chiga's lips curved into a smile at the sight.
Black Zetsu clapped excitedly,
"She's so cute!"
The little girl looked at Black Zetsu and softly said,
"You, Sister?."
Black Zetsu immediately melted, spreading across the floor in disbelief, feeling completely helpless. From that moment, a new sister complex had been born.
Kaguya turned to Chiga,
"Husband, we should give her a name. What do you think?"
Chiga, already prepared, smiled confidently,
"Sakuya. My daughter will be named Uchiha Sakuya."
Sakuya clapped her tiny hands and giggled, clearly delighted with her name. She jumped from Kaguya's arms to the ground and hugged Chiga's calf tightly, murmuring,
"I… I really like it, Dad!"
Chiga knelt down and embraced her, feeling complete for the first time in his life. The room overflowed with warmth.
Suddenly, Minato burst in from outside.
"Chiga! I came to learn how to make cherry pork from you… Huh? This… this is!?"
Minato froze at the sight of Sakuya in Chiga's arms.
Sakuya smiled and called,
"Uncle Minato!"
Chiga blinked in surprise,
"Little Sakuya, you know him?"
Sakuya nodded, speaking clearly,
"He often comes to see Mom with Aunt Kushina. I've seen him!"
Chiga was stunned, then gestured toward a wall,
"Sakuya, what do you see behind that wall?"
Sakuya replied confidently,
"Hmm… there's a big tree, and a little golden bird on it!"
Chiga and Kaguya exchanged glances. Sakuya's eyes possessed Byakugan-like x-ray vision.
Minato, witnessing the scene, could barely comprehend it.
"Chiga… this wouldn't happen to be your daughter, would it?"
Chiga nodded, smiling,
"Otherwise? Look at her. Doesn't she resemble me?"
"She does… but is she really a newborn? She could already go to kindergarten!"
"Is there a problem? She's my daughter. What's wrong with being special?"
Sakuya placed her hands on her hips, her small stance melting Minato's heart.
He reached out to hug her, but Sakuya raised her hand, and a strong repelling force pushed him back. Startled, Minato stumbled out of the doorway.
Sakuya floated safely into Chiga's arms, murmuring,
"No! Only Dad and Mom can hug me!"