A young girl, orphaned at an early age, carries out assassinations at the behest of her mentor.

After her parents were brutally murdered, school girl Sawa was taken into custody by Akai and Kanie, a pair of detectives assigned to her case. Corrupt and immoral, they train the girl to become a weapon, dangling the promise of vengeance in front of the hapless orphan. From celebrities and politicians to influential businessmen, Sawa is tasked with assassinating targets selected arbitrarily by her crooked overseers. She executes every mission without fail, and her distinctive weapon has become infamous among the city's police officers. Physically abused by Akai, who is no more righteous than her victims, Sawa begins to dream of a life unhindered by the shadow of her "guardians." One day, Sawa meets Oburi, a fellow orphan and vigilante. They quickly form a bond born of desperation and disgruntlement at the unjust world, envisioning a future free from the stain of murder.—MAL Rewrite

Sawa is a school girl, an orphan, and a hitman. She's under the control of Akai and Kanie, who give her targets to kill, detailing to her the crimes these men have committed. Some of Akai and Kanie's power over Sawa has to do with her deceased parents and a pair of earrings that are her prized possessions. Akai and Kanie bring Sawa in to assist another orphan, Oburi, with a multiple hit. Oburi and Sawa become friends, and this friendship may give Sawa the strength to break from her controllers, whose crimes against her are as abusive as the crimes ascribed to the men they have her kill.—<[email protected]>