Asa Mitaka/Synopsis

==Biography==
=== Background ===
Asa was born in Japan sometime in the early 1980s. It's also inferred that her father was at one point killed by a devil as Asa was only shown to be with her mother. One day she went out jogging with her mother but a raging Typhoon Devil attacked the area. Asa and her mother ran away but Asa noticed an injured cat in the middle of the road, feeling pity for the animal she stops to rescue it. However the Typhoon Devil is mere seconds from killing Asa and her cat so her mother pushes her out of the way thus sacrificing herself to save her daughter.
With no living relatives she is sent to an orphanage for children whose parents were killed by Devils. Asa also kept the cat she rescued and named him Crambon and viewed him as the only family she had left. The Caretaker of the orphanage saw Asa with Crambon and convinced her to give him up for adoption so he can be with a loving family to which Asa reluctantly agrees. However Asa later finds out from another orphan that The Caretaker drowned Crambon in a river, Asa confronted the Caretaker about it to which she states she didn’t think it was fair Asa still had someone to call family when her and the rest of the orphans didn’t. Eventually all of Asa’s tragedies caused her to become a very introverted and spiteful, afraid of making relationships out of fear of losing them. 
=== Justice Devil arc ===
Asa, now in high school watches her teacher Mr. Tanaka tell the class they are keeping a chicken Devil named Bucky and plan to kill and eat him to teach everyone a lesson on the value of life. Asa of course shows disdain for Bucky due to her general hatred of devils even wishing that he would die. Asa then walks to the school balcony to eat some ice cream but she is soon confronted by the class president who attempts to make friends with her but she of course rudely dismisses her. 
 
The next day Asa learns that the class is in fact keeping Bucky as a pet much to her disdain. Later during recess Bucky and the class invite Asa to come play soccer. Excited at the prospect of being noticed she rushed to her classmates but accidentally trips and falls in Bucky killing him. The class then grows disdain for Asa for killing Bucky. The next day the class president and Mr. Tanaka visit Asa’s house and offer to take her to Bucky’s grave so they can pay him respect. However the class president soon reveals that she is actually in a relationship with Mr. Tanaka and feels jealous that Asa is getting all his attention so she orchestrated Bucky’s death and now made a contract with the Justice Devil to kill Asa. The Class President then uses the Justice Devils powers to attack Asa and kill her by slashing her face open. In her final moments Asa looks back at her life with regret for her pessimistic outlook and whishes she lived more selfishly. However the War Devil, spares Asa’s life by taking over her corpse and turns Mr. Tanaka into a weapon and kills The Class President. 
The next day Asa wakes up in her bed and believes her experience last night to be a dream however the War Devil wakes her up and reveals that it was not a dream. Asa, in absolute shock pinches her cheek believing what she is seeing to still be a dream, however the War Devil mocks her for this and tells her to face reality. The War Devil introduces herself and reveals she took over her body following her death, but left around fifty percent of her brain intact, preserving Asa's consciousness. The War Devil then tells Asa that she brought her back in order to better assimilate to human society. The War Devil then demands Asa go to school and do as she says lest she take the remaining half of her brain and kill her for good. 
As Asa and The War Devil walk to school Asa questions why she wants to go there in the first place. The War Devil reveals that she believes her arch-nemesis Chainsaw Man is actually attending the school incognito and she wants to find out who he is and kill him. On the way Asa thinks about how bad her predicament is and seriously considers going to public safety or a devil hunter for help. However the War Devil can read Asa's thoughts and dissuades her from doing this under the threat of death. At the entrance of the school, Asa suddenly remembers that her entire class likely still hates her for accidentally killing Bucky. Although she knows the War Devil will kill her if she doesn't listen but she starts to think death might be better than going back there. Suddenly a young man sees Asa in distress and asks if she's okay. Asa is told by the War Devil to ask him about Chainsaw Man's whereabouts in the school but Asa's is unable to form any words. The War Devil then takes control of her body and asks Yoshida about the rumors regarding Chainsaw Man's presence at the school. Yoshida reveals that he suspects Chainsaw Man to be in the school's devil hunter club. Suddenly out of nowhere the War Devil asks Yoshida to be her boyfriend much to Asa's shock and embarrassment. Yoshida brushes it off and denies her proposition. Asa asks why the War Devil asked him out to which she reveals she can turn anything that she preserves as hers into a weapon and plans to turn as many humans into weapons as she can to kill Chainsaw Man. Yoru then forces Asa to join the devil hunter club where she meets Yoshida again as well as a girl named Yuko.
Asa and Yuko are tasked by the devil hunter club to kill at least one devil by the end of the week to join the club. As the duo walk down the halls of the school Asa notices a group of girls from her class insulting and laughing at her, apparently still upset over Bucky's death. Asa then tries to leave the school and goes to her locker to get her shoes, only to find somebody ruined them by stuffing raw chicken meat into her locker. Completely annoyed and saddened she tries to leave the school barefooted to which the War Devil advises against as they will hurt their feet. The War Devil surprisingly feels some sympathy for Asa's plight and offers to kill the girls bullying her but she obviously declines. Yuko then catches up to her and offers Asa one her own shoes although she declines at first gives it to her anyway Asa then ends up chasing Yuko all over town to return the shoe until they end up at her house. Yuko tries to invite her inside but Asa declines this. Yuko then gives Asa her shoes and tells her if she doesn't want them she could always sell them. As Asa walks home, the War Devil questions whether or not they should sell the shoes to which Asa calls her an idiot for suggesting it.
The next day Yuko and Asa walk around the city searching for devil to hunt. Yuko then reveals that she and Asa have something in common that both their parents were killed by devils and compares the two to manga characters. Yuko them leaves to go to the bathroom, as she is gone the War Devils suggests turning Yuko into a weapon. Of course Asa is against this but the War Devil insists that they need a powerful weapon to kill Chainsaw Man and if they succeed she will return Asa's body to her. The two then argue and Asa shows annoyance that the War Devil keeps calling her "girl" and insists she call her by her real name. The War Devil agrees and tells Asa to call her Yoru from now on. Yuko and Asa enter a apartment building and encounter a Bat Devil eating humans. Asa and Yuko are then stricken with fear. Suddenly, Yoru tells Asa that she can't help and take control of her body while she is afraid thus they stand no chance of defeating the Bat Devil. Although Yoru advises Asa back away slowly her and Yuko instead run away out of fear. However a piece of debris impales and injures her leg. Yuko passes out from her injuries and Yoru suggests turning her into a weapon to take down the Bat Devil seeing as she is already good as dead. Asa however refuses and tries to carry Yuko to safety. Just as the Bat Devil is about to kill them they are inadvertently saved by Chainsaw Man whom was fighting a Cockroach Devil. 
That night, Yoru throws a temper tantrum because she was saved by Chainsaw Man of all people much to the annoyance of Asa. Asa questions why Yoru even hates Chainsaw Man to which she reveals that they once battled in hell and Chainsaw Man managed to defeat her and eat apart of her body. This not only stopped any further wars from breaking out but it severely weakened her and could cause her to be forgotten entirely. Asa questions if she truly fears being forgotten but she falls asleep before she can answer. Before falling asleep herself, Asa contemplates that before she did care if she died but is grateful that Chainsaw Man saved her.
The next day Yoshida introduces her to a boy named Denji. They talk on the school rooftop about Chainsaw Man. Denji asks what she thinks of him to which Asa replied that while at first she hated Chainsaw Man, she is fairly neutral about him. The two then get into a heated debate about Chainsaw Man with Asa pointing out rumors that he eats people, however Denji retorts that is was only that "one time". The debate ultimately ends with Denji revealing that he is Chainsaw Man. Asa of course doesn't believe it and calls him a loser. Yoru questions why Asa walked away as they finally found Chainsaw Man. Asa points out that Chainsaw Man would not out himself like that and calls her stupid for believing it. Yoru throws a tantrum because of the insult. Asa then quickly apologizes out of annoyance.
Later Asa visits Yuko at her house while she is healing from her injury. Yuko calls Asa "Chainsaw Woman" because she was saved by Chainsaw Man. The two decide to converse about their darkest secrets to bond with each other , to which Asa reveals that she peed herself in grade school. Yuko reveals a much darker secret; she killed her own neighbor just because he was gambling with his welfare money. Yuko then claims she made a contract with the Justice Devil and can now read minds thus she knows about Yoru and plans to “take care” of her bullying problem, ominously telling her not to go to school tomorrow. As, Asa leaves she realizes that Yuko plans to kill the bullies at school. Asa becomes intent on trying to talk her out of it but Yoru refuses and takes over her body, believing that their battle might lure out Chainsaw Man. Asa is against this plan but Yoru takes over her body to ensure Asa can’t interfere. 
The next day Yoru confronts Yuko and the two fight with the latter transforming into a devil due to her contract. However, despite her best efforts Yoru realizes she can’t stop Yuko and decides to let Asa fight her instead knowing Yuko would be hesitant to fight her best friend. Asa seeing no choice decides to fight Yuko by using Yoru’s powers to turn her school uniform into a sword. Asa attempts to attack Yuko but the sword merely grazes her and she swats away the weapon. However that mere graze was enough to chop Yuko to pieces. Asa immediately remorseful for what she did begs Yuko not to die. However a mysterious girl offers to save Yuko as she is willing to do anything for her “little sister”. Yuko then resurrects and grows much larger and more powerful however as a result she accidentally knocks out Asa. While, Asa is unconscious Chainsaw Man appears and defeats Yuko. When Asa wakes up she notices Chainsaw Man has arrived and control of her body is immediately usurped by Yoru who attempts to kill Chainsaw Man. However he is saved by Yoshida causing Yoru to throw yet another tantrum for failing to kill her nemesis.
That night Asa’s is awoken by a knock on her door. She finds it to be Yuko who is now permanently stuck as a devil. Yuko apologizes for her actions and reveals that the real reason she made the contract with the Justice Devil in the first place was because she wanted to be a superhero like Chainsaw Man so then people would actually like her. Before Yuko leaves, Asa offers her, her shoes just as she did when they first became friends. Unknown to Asa, however Yuko would later be slain at the hands of a man pretending to be Chainsaw Man.
=== Dating Denji arc ===
The next day Asa and Yoru question why their “uniform sword” was so strong and managed to defeat Yuko with just a single hit. Asa reveals that it was a gift from her late mother and the two realize that Asa’s weapons are stronger if she feels emotions of guilt from making them. Asa then mentions the mysterious girl who revived Yuko and questions if Yoru knows her. Yoru denies knowing her and claims she is just a madwoman. Suddenly the Devil hunter club president Harkua Iseumi walks up and intrduces himself. The young man commends Asa for her skills during the fight with Yuko and offers her a spot as a new member of the club seeing as a one of their membersdied and the other is out of commission. Yoru then takes over Asa's body and asks if Chainsaw Man is among their ranks to which Haruka reveals a pull cord on his chest and claims he is Chainsaw Man. Although Asa questions the validity of his statement Yoru easily believes it however she doesn't want to pick a fight with him just yet seeing as she needs a powerful weapon to do so. Yoru then demands Asa make another poweful weapon one stronger than even her uniform sword. Asa, desperate to rid herself from Yoru agrees to turn someone into a weapon.
Later Yoru and Asa scout various people as potential candidates to be turned into weapons. Yoru suggests turning a cat into a weapon but Asa would much rather do so to a human instead. Asa suggests turning someone horrible into a weapon like a thief or a criminal but Yoru points out that Asa needs to feel actual guilt when turning people into a weapon other wise said weapon will be weak so she suggest finding someone who is in the gray zone in terms of morals. Suddenly Asa spots Denji picking up used cigarette buds and reclying them into new ones to sell to homeless people for a quick buck. Asa is disgusted by his actions but notes that while he is a bad person he isn't necessarily evil, thus he might be a good person to turn into a weapon. Asa then walks up to Denji and sheepishly asks him out on a date to which Denji agrees despite their initial animosity towards each other.
The next day as Asa gets ready for her date she tries to put on a hair pin to make herself look more appealing but scraps the idea. Yoru expresses doubt that Asa can actually seduce Denji but Asa is confident she can claiming that boy will fall for any girl so long as they show them a fraction of a good time. Denji and Asa then go to a local aquarium for their date and visit the starfish exhibit and begins blabbering random facts about them. Denji is highly annoyed by this and just wants to see penguins however Asa denies this and claims that she planned everything out. Denji grows annoyed and leaves to see the penguins on his own. Asa grows frustrated at Denji and pins the blame on him for their date failing. However Yoru points out that maybe it actually her who is in the wrong and that she might be a "total bore". Suddenly the same girl from earlier appears and takes Asa's side over the matter. Asa questions who she is to which she reveals that she is the War Devil's older sister Fami a.k.a The Famine Devil. Although Yoru warns Asa not to listen to her Fami cuts Yoru off by somehow transporting the two outside. Fami claims that she won't let Asa leave the aquarium until she turns Denji into a weapon. Suddenly Denji repapers and claims that there is a problem, they are now trapped in the aquarium because of the power of the newly reincarnated Eternity Devil.
Category:Synopsis