Senna

is a character from the movie Bleach: Memories of Nobody. She is a young Shinigami that Ichigo Kurosaki and Rukia Kuchiki meet in the Human World. She is also the main female protagonist of the movie.

Appearance
Senna is a young girl with purple hair and a red ribbon tied to it. She originally had a yellow ribbon, but she later switched it with the red ribbon. She has large amber eyes and is usually seen in a light-brown colored shirt with a brown skirt and maroon tie. When she transforms into a Shinigami, Senna wears the standard unseated Shinigami uniform with a large, red ribbon tied around her waist.

Personality
Senna likes the color red and high places. She's also very curious, constantly darting from place to place. Although she is haunted by brief, randomly-appearing memories of her "past", Senna generally exhibits an upbeat and carefree personality.

As stated by Ichigo, Senna is strong-willed, stubborn, and somewhat outspoken. She is also very loyal to her friends, as she is even willing to risk her life help Ichigo.

Bleach: Memories of Nobody
After slaying a Hollow, Ichigo Kurosaki and Rukia Kuchiki investigate a large group of unknown white beings inhabiting a portion of the city. The spirits turn hostile and begin to attack Ichigo and Rukia, who do not know how to respond. Senna then arrives and begins to attack the spirits. While fighting the spirits, Senna is questioned as to why she is there, but responds by releasing her Shikai. Ichigo stops her from releasing and tells her to stop her attack on the spirits, as they are not Hollows, but Senna ignores his protests and releases her Shikai anyway. With her Shikai, Mirokumaru, Senna uses a large tornado to eradicate all of the spirits in the area.

Once the spirits are gone, Ichigo and Rukia are wondering what happened to Senna, but she shows up behind them, celebrating her victory before she notices that they are still present. Wondering how Senna got back into her Gigai, Ichigo asks who she is, but Senna doesn't answer him, arguing that he should introduce himself before questioning her. Ichigo tells her his name, and Senna introduces herself as well before trying to leave. Ichigo stops her and asks why she attacked the spirits, but she merely tells him that it was because it was her job. Rukia asks if Senna knows anything about the spirits, but she is distracted by her reflection and states that the yellow ribbon in her hair doesn't suit her. Annoyed by Senna's actions, Ichigo attempts to question her again; however, Senna points out to Ichigo that Kon fell out of his body, causing the local authorities to wonder if he fainted. Senna tries to leave, knowing Ichigo needs to do something before they call an ambulance, but he grabs her and drags her with him.

As Ichigo and Rukia are questioning her, Senna realizes that there is a Ferris wheel near. She turns back to Ichigo and Rukia, forgetting what they were asking her. Rukia asks Senna which Division she is in, but Senna replies that she forgot. Rukia argues that if Senna knows how to use Shikai, then she is a Shinigami, and that there was no way she could forget which Division she's affiliated with. Senna states that she can't remember, but doesn't see it as an issue. Ichigo asks if she knows what the spirits were, but she replies that she does not know and only attacked them because she felt that they were hostile. Rukia leaves, leaving Ichigo to keep track of Senna on his own. Senna runs from Ichigo and tries to get him to play a game of tag with her. Ichigo eventually loses track of Senna, but leaves when Tōshirō Hitsugaya and Rangiku Matsumoto approach him.

Ichigo returns to the mall in the evening to talk to Senna once again. Senna greets him, surprised that he actually returned after being gone for so long. Ichigo tries to question her again, but she tells him that she'll answer them once he catches her and runs off again. Ichigo tries to find her, but he loses track of her. He then finds Senna standing on top of the roof of one of the stores and watches as she balances herself on one of the overhead wires lighting the area. Senna suddenly loses balance and falls off, alerting the entire crowd, but vanishes before she even hits the ground. She appears behind Ichigo and gets the attention of the crowd gathered in the area, who applaud her. He tries to get Ichigo to join her, but he grabs her and runs away from the crowd.

Ichigo then explains to Senna that the spirits they encountered earlier were called Blanks, and that he was looking for the Shinenju so they can stop a phenomenon that's linking the Soul Society and the Human World together that is being caused by someone controlling the Blanks. Senna tries to get more information as to why the group is looking for the Shinenju, as well as what the Shinenju is, but Ichigo is unable to tell her either, as he does not know. Senna tells them their only option is to wait for the Blanks to return in order to get a lead on what they're up against, and that she would help him if he takes her onto the Ferris wheel. Ichigo notes that Senna likes high places, and she tells him it is because things that look confusing become clearer when seen from above. Ichigo realizes that Senna has a red-colored ribbon and she tells him that she tried it on in a store, but forgot she was wearing it. Ichigo gets up and tells her they're going back to the store, but she reminds him that he needs to pay the bill for their food.

Ichigo and Senna find the shop Senna took the ribbon from. Ichigo pays for the ribbon and gives it to Senna, who goes elsewhere to put it on. As she heads back to meet with Ichigo, she sees the river outside the window, causing her to think of memories of her father. She ends up leaving the mall to visit a cemetery, but upon her arrival, she is ambushed by group of Blanks, as well as a large man named Jai. Jai tells Senna to come with him, as his leader, Ganryū ordered him to capture her. Senna inquires who Ganryū is, but does not tell her, and she realizes that Jai brought a group of people with him. Senna attacks Jai, but he blocks her strike and restrains her. However, before Jai and his group can leave, Ichigo arrives and cuts off Jai's arm, which frees Senna. Jai and his group then retreat before the fight can escalate.

After her assailants leave, Ichigo asks Senna why she left without warning. Senna tells him that her family is buried in the cemetery. Ichigo tells her to stop making up stories, but she assures him that she's telling the truth, as she remembers the cemetery from when she was alive, so she wanted to check it out. She tries to leave, saying that she will help Ichigo the next day, but Ichigo stop her from leaving, noting that she was just attacked.

Sometime later, Ichigo brings Senna to his home, where she meets his father, Isshin Kurosaki, and his sisters, Yuzu Kurosaki and Karin Kurosaki. Ichigo tells them a fake story of Senna being chased by bad guys and decided to offer Senna a place to stay. While Karin is suspicious of the story, they let Senna stay anyway. Ichigo and Senna head into Ichigo's room. Senna comments that Ichigo's family is nice, and that her dad was different. Senna then thinks about a memory of her and her father fighting. Ichigo asks Senna if something is wrong, but she denies it. He decides to ask her what the people who attacked her wanted. She tells him that their leader wanted her brought to him, but that's all she heard. She eventually falls asleep on Ichigo's bed.

Senna and Ichigo return to the area where they first encountered the Blanks. Senna asks if Ichigo is sure that they would show up again. Ichigo, however, replies that it was the only place the Blanks had appeared on their own, so it was the only clue they had to act on at the moment. Bored from waiting, Senna wanders off and finds a child Plus named Tomoya, who was looking for his father. Senna decides to help him, much to Ichigo's reluctance. Ichigo eventually asks Senna why she insists on finding Tomoya's father, and Senna replies that she would like his last memory to be a happy one. They then arrive at a festival, where Tomoya's father was waiting for them. He thanks Senna and Ichigo for reuniting them. They both bid Ichigo and Senna farewell before vanishing. Senna then grows confused, recalling many memories, and she begins to question what she really is.

Ichigo and Senna's conversation is interrupted by the arrival of Jūshirō Ukitake, Suì-Fēng, Renji Abarai, Hitsugaya, Rangiku, and Rukia, as well as many Onmitsukidō members. Ichigo questions why they are there, and Renji tells them that on the orders of the Central 46, they are to retrieve Senna and bring her back to the Soul Society. Rukia further explains that after researching information of the Gotei 13, the Onmitsukidō, the Kidō Corps, and the Shinō Academy, they could not locate a Shinigami by the name of "Senna", and that the Zanpakutō Mirokumaru was lost in the Dangai 100 years ago when its owner was absorbed by the Valley of Screams. Senna argues that she is an actual Shinigami, but Renji asks her when she arrived in the Human World. Senna explains that she woke up by the river three days ago, and she is aware of her name. However, as she tries to explain more information about herself, she becomes confused. Renji, however, is not surprised by Senna's confusion, knowing that her head is full of memories, and Ukitake clarifies that Senna is indeed the Shinenju. Hitsugaya further explains that the Valley of Screams appeared to the Soul Society 24 hours ago, and that the Gotei 13 have concluded that the leader of the enemies, Ganryū, seeks to destroy both the Human World and the Soul Society by using the Shinenju to do so. He then tells her than they will proceed to detain her indefinitely. Ichigo, however, disapproves of the Shinigami's actions, explaining that Senna still experiences anger, happiness, and pain, but by disregarding her as a living being, their actions aren't anymore justified than the enemy's, and because of this, he refuses to let them take Senna.

Before any fighting between Ichigo and the Shinigami, the enemy group ambushes them and separates the Shinigami. Senna and Ichigo notice that the people of the festival have surrounded them as well and begin transforming into Blanks. Jai also tries to attack them from behind, but Senna saves Ichigo in time. Ichigo then uses Kon to separate his Shinigami form from his body, so he can fight Jai. He tells Kon to keep Senna safe while he helps fight the enemy. Rukia tries to defend Kon and Senna from the Blanks, but Senna runs away from them to help fight. She tries to attack Ganryū, but he manages to incapacitate her with little effort.

With Senna captured, Ganryū's subordinates cease engaging the Shinigami and regroup with him. Ukitake then identifies them as an ex-noble clan of the Soul Society. Ganryū denies having any knowledge of Ukitake's accusations and identifies his group as the Dark Ones. He then has the Blanks detonate in the area, distracting the captains and officers present, as well as killing the Onmitsukidō members. With Senna captured, Ganryū and the Dark Ones attempt to depart, but are halted by Ichigo, who confronts them alone. Senna regains consciousness and demands Ganryū to release her, but is assured by Ichigo that she will be saved. Using his Bankai's speed, Ichigo bypasses Ganryū's subordinates and manages to confront him. However, Ganryū catches him off-guard and impales him with a spear. Losing consciousness fast, Ichigo still tries to reach Senna, but he only brushes Senna's ribbon off. Seeing Ichigo plummet to the ground, Senna screams in horror before vanishing with Ganryū, who proceeds to take her into the Valley of Screams.

Within the Valley of Screams, the Dark Ones attach Senna to a device powered by the Blanks. As concurrently explained by both the Dark Ones and Mayuri Kurotsuchi, the Blanks are naturally attracted to memories, which they lack. Senna, being composed of nothing but memories, will attract the Blanks, causing a chain reaction that will collapse the entire dimension. This in turn will cause the real world and Soul Society to collide, potentially annihilating both. The Dark Ones explain that their actions are to get revenge on Soul Society: they were Shinigami over a millennia ago, but were exiled and have since adapted to the Valley of Screams.

Unwilling to give up on Senna, Ichigo finds the portal into the Valley of Screams on the river. As he enters it, Rukia heads to Soul Society to get reinforcements. Since the only available portal into the Valley of Screams exists in the real world, and the process that will destroy both Soul Society and the real world will complete within an hour, General Yamamoto orders that the Kidō Cannon be fired at the dimension to obliterate it first. Yamamoto refuses to order a rescue mission with such a tight time frame.

Within the Valley, Ichigo finds himself overpowered by the sheer number of Blanks the Dark Ones have at their command. He is saved by the timely arrival of Kenpachi Zaraki, with lieutenant Yachiru Kusajishi on his back. Aside from Zaraki, Suì-Fēng, Tōshirō Hitsugaya, Izuru Kira, Byakuya Kuchiki, Rangiku Matsumoto, Tetsuzaemon Iba, Shūhei Hisagi, Ikkaku Madarame, and Yumichika Ayasegawa have also arrived to help. The group makes short work of most of the Dark Ones, leaving Ichigo to battle their leader. Though it takes Ichigo longer and takes a larger toll on him, he is victorious as well.

Despite having stopped the collapse of the Valley of Screams, the process is far enough along that the effect persists. Senna, now in control of the Blanks, sacrifices herself to use their power to push the two worlds apart once more since she did not want the world where Ichigo lives to be destroyed, also saying to Ichigo, "If the world ended, you'd disappear too". This saves the inhabitants of both Soul Society and the real world.

Extremely weak, Senna asks Ichigo to take her back to the graveyard so that she can see her name on her gravestone. Though the gravestone does not have her name, Ichigo tells Senna that her name is on it. Content that she once lived in the town and assured of her own separate existence, Senna evaporates. Rukia explains that once the power of the Blanks has faded, their memories of Senna will fade along with them, also saying that "One can't remember something that shouldn't have existed in the first place". However, after the credits, Ichigo seems to vaguely remember Senna when the red ribbon he bought her floats down from the sky to him, and a girl resembling Senna is seen running past him.

Powers & Abilities
Senna has Shinigami powers and a Zanpakutō. Rukia reveals her Zanpakutō was lost 100 years ago in the Dangai Precipice World. However, it wasn't revealed as to how Senna obtained her Shinigami powers or her Zanpakutō. Unlike other Shinigami, she is able to create a Gigai from leaves and can separate her spiritual form from her Gigai at will, in a swirl of autumn leaves.

Blank Control: Senna, as the Shinenju, has the power to control the Blanks. She does this near the end of the movie, using them to prevent Soul Society and the Human World from colliding. However, by doing this, she also used up her own energy as well, causing her to fade away sometime afterwards.

Expert Swordsmanship Specialist: Senna is a highly proficient combatant with a sword. Her battle style is shown to be swift and graceful with constant shifting in her bodystance, similar to a gymnast. Through this, she has able to keep up a continuous attack that leaves little time for countering.

Enhanced Agility: Even in her Gigai, she is very agile, able to perform several backflips at once. It is implied she is adept in Shunpo when she falls and seemingly disappears, reappearing behind Ichigo during a tight-rope walking performance at the Karakura Mall, fooling even Ichigo, who is a fine expert in Shunpo himself.

Zanpakutō

 * In its sealed form, Mirokumaru resembles an ordinary katana. It has a red hilt and a square tsuba.
 * Shikai: Her Zanpakutō is released by the command . It takes the form of a Khakkhara when released.


 * Shikai Special Ability: Mirokumaru has the power to create and control tornadoes.


 * Bankai: Not Achieved

Appearances in Other Media
Senna has also appeared as a playable character in the video game Bleach: Heat the Soul 5, as well as Bleach: Heat the Soul 6 and Bleach: Heat the Soul 7.

Trivia

 * Senna seems to make a cameo appearance in Episode 204, as Ichigo, Uryū, Chad, Rukia, Orihime, and Rurichiyo are in a restaurant. As Ichigo is talking, the back of the head of someone who looks similar to Senna with a yellow ribbon is seen in the background, which is the same color ribbon as when Ichigo first meets Senna.

Quotes

 * "When you're up high, all the stuff that looks confusing and messed up... suddenly becomes crystal clear."