Chise is the main female character of Saikano. She's is a shy, clumsy girl with very little self-esteem and has poor grades in everything except for World History. She was constantly hospitalized in Tokyo during her elementary years, and thus, has very few friends (except for Akemi). She starts dating Shuji, with Akemis help, and tries to make her relationship work with him despite his apparently aloof personality. However, Chise is very inexperienced and does not know much about relationships, to the point she reads shoujo manga for advice. She was turned into the ultimate weapon against her will, and the series revolves around her and her fading humanity. Chise tries to come to terms with her new weapon body while also trying to convince herself she is still human.  As her condition worsens, she is convinced she is nothing more than a weapon. She believes that there is nothing human about her anymore since she thinks all she can is destroy. She claims that weapons were made to kill and destroy. Her boyfriend Shuji, however, is able to help her overcome this belief on the basis that she is able to protect something that she loves, rather than destroy it, and that love is a feeling only a human can experience. Chise's love for Shuji allows her to realize what she truly is, and it also allows her to break free of the body that has been taken over by the weapon that it was turned into.  (Source: Wikipedia) 

Shuuji and Chise are third year students at a high school in Hokkaido. The shy Chise is finally confessing to Shuuji, and finally the two of them are starting to exchange diary awkwardly. One day, Shuuji tries to escape from a sudden enemy air raid on Sapporo. While desperately escaping from the air raid, Shuuji sees a scene that he could not forget for his life. He sees Chise, with a huge weapon looking as if it was part of her hand, shooting the enemy fighters down one by one. Apparently, Chise is the ultimate weapon with destructive power which is important for the war. 
(Source: AniDB)

__Hobbies:__ Shopping
__Skills & Abilities:__ Dancing & Singing

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She is a voice actress currently affiliated with Atomic Monkey. As a singer she is signed to Rondo Robe.

Shy Chise and nervous Shuji are high school seniors in a small town and have just started dating. But everything changes when Shuji discovers that Chise has been engineered by the Japanese Self Defense Force to transform into the Ultimate Weapon! Soon Chise is torn between realizing her potential as a devastating fighting force and her desire to share a bowl of ramen with her new boyfriend! 
(Source: Viz)

In the sky over Hakata city, fighter planes were flying and bombers are dropping bombs one after another. It became a sea of flames around Fukuoka Dome. At that time, a light appeared in the sky. In the shower of missiles, it intercepted enemy planes by its energy cannon. It was another &ldquo;Ultimate Weapon&rdquo;. 
In the meantime, Chise was suffered from the fact that she&rsquo;d been turned into a weapon against her will, and she was thinking about Shuji. However, the army continued sending her to the battle fields. 
Whether another ultimate weapon is an enemy or a friend? 
This OVA will reveal another truth that wasn&rsquo;t described in TV series. 
(Source: AnimeNfo)