Byakuya Kuchiki is the 28th head of the noble Kuchiki clan, one of the four great noble families in Soul Society. As such, Byakuya acts in an aristocratic manner — he seems always serene and apathetic towards other people, even when he is actually deeply conflicted. He is also extremely calm, even in battle, and is very seldom surprised by even the most drastic of actions. Ironically, when he was younger, he was quick to anger and very hotheaded, as noted by his grandfather, Ginrei Kuchiki.
Byakuya strongly believes in law and order. As the head of one of the great noble families and as a captain in the Gotei 13, he always works hard for a peaceful society. He thinks that if someone in his position doesn't follow the rules as a good example, then no one will follow them. He believes that to maintain the order, all law-breakers must be punished, even if that goes against his own wishes. Despite his icy and regal manner, Byakuya cares for and protects those important to him, even referring to Rukia as his "pride".
Zanpakuto name: Thousand Cherry Blossoms (千本桜, senbonzakura)
Release command: Scatter (散れ, chire)
Shikai Description: Senbonzakura, Byakuya's zanpakutō, breaks up into thousands of tiny blades which reflect light making them appear to be cherry blossom petals.
Attack no.1: Flash Blossom (闪花, senka)
- A flash step combined with a spin to quickly move behind the enemy, followed by a combination of two quick thrusts
Attack no.2: Thousand Cherry Blossoms (千本桜, senbonzakura)
-In its shikai, Senbonzakura's blade separates into thousands of slender blades. The release can be negated before it completes, such as when Yoruichi Shihouin wrapped the blade in cloth during Byakuya's short battle with Ichigo. While the blades are too small to see normally, they reflect light in such a way as to appear as cherry blossom petals. Byakuya can control the blades at will, allowing him to shred opponents at a distance and break through almost any defense. While Byakuya can control the blades with his mind alone, using his hands allows him to do so more effectively, making the blades move twice as fast.
Attack no.1: Vibrant Display of a Thousand Cherry Blossoms (千本桜景厳, Senbonzakura Kageyoshi)
- Essentially a much larger version of Senbonzakura's shikai. To activate it, Byakuya drops his sword. The sword passes through the ground and two rows of giant blades rise up from the ground. These then scatter into millions of tiny blades. The number of blades is great enough that Byakuya can use them for defense and offense at the same time. He commonly forms them into large masses of blades to crush opponents. Like with his shikai, its attack is triggered with the phrase "scatter".
Attack no.2: Massacre Scene (殲景, senkei)
- Unites the scattered petals into complete swords that form rows of swords around Byakuya and his opponent. In this form, Byakuya abandons the defense potential of his many blades and concentrates on killing the enemy. While Byakuya can control these swords as he does his regular blades, he usually attacks with just one in hand.