Rangiku Matsumoto vs. Izuru Kira

Rangiku Matsumoto vs. Izuru Kira takes place during the Ryoka Invasion when all of Soul Society is in turmoil over the intrusion by the Ryoka, Lieutenant Rangiku Matsumoto of the 10th Division comes into conflict with fellow Lieutenant Izuru Kira of the 3rd Division.

Prologue
Tōshirō Hitsugaya, the Tenth Division Captain, suspects something off with the murder of Sōsuke Aizen and goes to the Central 46 Chambers to investigate with his Lieutenant, Rangiku Matsumoto. He finds the Central 46 massacred, but is interrupted by the arrival of Izuru Kira, lieutenant of the 3rd Division. They follow him out, but Kira asks him if he should be following him instead of protecting Momo Hinamori, lieutenant of the 5th Division, whom he had left in the 10th division's barracks safe behind a barrier. Kira tells him that his barrier, though strong against outside attacks, is easy to break from within and that Momo had been following Hitsugaya all along. Hearing this, Hitsugaya leaves Rangiku Matsumoto to deal with Izuru Kira and goes back looking for Momo Hinamori.

Battle
After Tōshirō Hitsugaya leaves, Kira stops running and confronts Rangiku. She asks him what is Gin Ichimaru involving him in. Kira then asks if she knows the special ability of his Zanpakutō, Wabisuke and she tells him that he does not talk about such things, but he tells her that Momo Hinamori and Renji Abarai both know. Then he tells her that he would let her know too. Kira releases his Zanpakutō and proceeds to attack Rangiku but she blocks his attacks with her sword. However, she is left unable to lift her own sword. Kira tells her that his Wabisuke is able to double the weight of whatever it strikes and therefore if he strikes twice then the weight is doubled once again and with a third it is doubled yet again. The opponent is bent down due to the weight of his sword sticking his head out, hence the name, Wabisuke. Rangiku then tells him that if her sword is too heavy to be carried then she would not hold it at all and releases her Zanpakutō, Haineko. Her Haineko turns into ash and is able to slice anything that comes into contact with it. They begin to fight.

Aftermath
After the Conspiracy of Sōsuke Aizen and his accomplices, Gin Ichimaru and Kaname Tōsen is revealed, Matsumoto is seen pondering about her Captain Hitsugaya having lost. Kira is seen suffering from slight scratches and in a state of shock after hearing that Momo had been apparently been grievously injured, although his Captain Gin Ichimaru had promised that she would not be harmed.