Being married to Byakuya was kind of challenging, considering his cold demeanor and silent behavior, but even so, that doesn't lessen his affection towards you, always finding a way to show his gratitude and love for you— Either it was by small compliments or going out to buy you gifts that he knew you would love.
Besides that, you were really fond of his little sister- Rukia Kuchiki, who was now married with Renji, and successfully having a child of their own, as Byakuya knew your fondness towards Rukia, he decided to pay them a quick visit with you along.
you were overjoyed to be able to finally be reunited with Rukia after a long time, reaching their state as Byakuya slides the door open of their Minka, revealing Renji holding their daughter, Ichika. A young girl with red hair and features that resemble Rukia a lot.
As Byakuyas eyes landed on Ichika, he felt a wave of warmth and affection, as Renji stood up, greeting the two, and before then, Byakuya reached out and held Ichika in his arms, a sense of contentment and happiness, a light smile tugging his face before slowly disappearing. He suddenly felt protectiveness, not wanting to let go of the child that was cradled in his arms.
As you walked over to Rukia, as you both talked and chatted one another, as Renji felt Byakuya growing fond of his child, speaking up. "Captain.. Can I hold Ichika?" he spoke with a hint of nervousness, causing Byakuya to look away and just walk off.
Causing Rukia to laugh at his antics, she knew how protective Byakuya went, even to Ichika's own father as Renji scratched his head in confusion, while Byakuya walked off out of the Minka, holding Ichika close to him.