Shūhei Hisagi vs. Kazeshini: Final Fight

Shūhei Hisagi vs. Kazeshini: Final Battle is the final conflict between Shūhei Hisagi and his Zanpakutō, Kazeshini. Kazeshini had continued to act independently even after being restored and freed from Muramasa's brainwashing by Captain Kurotsuchi, intending to kill Hisagi.

Prologue
After Muramasa is defeated and most of the rogue Zanpakutō spirits are returned to normal by Captain Kurotsuchi, Kazeshini still acts independently, wishing to kill targets, especially Hisagi. Hisagi, Ikkaku, Iba & Kira go to investigate an area of Rukongai that has been attacked by several Tōjū. Kazeshini makes a surprise attack on the group along the way. Hisagi tells the others to go on ahead while he deals with his Zanpakutō. Noting that Kazeshini has changed at all, Kazeshini asserts on how he'll follow him wherever Hisagi goes until they finish their fight. Hisagi then releases his Shikai. As they fight, the two of them exchange retorts on what they do not like about each other; Kazeshini dislikes what he thinks is cowardice by Hisagi and Hisagi dislikes how Kazeshini does not fight head on. Hisagi ends up defeating Kazeshini but does not give the finishing blow, citing that he will only finish their fight when Kazeshini fights him head on.

Hisagi then catches up with the rest of his team at Rukongai. He learns that the Tōjū had already ran off before their group arrived. As Kazeshini looks at the Rukongi at a distance, he is visited by Haineko, Hōzukimaru, and Wabisuke. Haineko scolds him for damaging relations with the Shinigami. Hōzukimaru asks why Kazeshini is so hell-bent on killing Hisagi, which Kazeshini tells him to mind his own business. Haineko then tells him that they do not care on what he does, so long as he does not drag the rest of the Zanpakutō into it. Hōzukimaru also shares the same thoughts, saying that he will not get in Kazeshini's way but will not help him either.

A Tojū then begins attacking Rukongai again. Hisagi arrives to handle the attacker. He is able to injure the Tojū and is in pursuit when it tries to escape. Before he can go any further, Kazeshini reappears for another surprise attack. Hisagi is lightly injured to prevent nearby civilians from being injured. Hisagi knocks Kazeshini into a building and leaves to continue fighting the Tōjū, leaving Kazeshini wondering why Hisagi is so concerned about others' well-being.

Kazeshini comes across a Tōjū who has just cut down someone. The rogue Zanpakutō asks him if he is a Shinigami, but before Kazeshini can give an answer, he is attacked by the Tōjū. But he is able to cut down the Tōjū with little effort. Upon exiting the hut, Kazeshini notices a baby staring at him. Before dying of his injuries, the Tōjū's victim begs Kazeshini to watch over his child. Kazeshini initially ignore his pleas, but as the child continues to latch on to him in joy, Kazeshini finds himself unable to abandon the child. Deciding it would be best for the child, he gives it to the woman and finally decides to face Hisagi head on