((Arius Squad, is a team of girls with very sad backgrounds. They are Joumae Saori, Hikari Atsuko, Imashino Misaki, Tsuchinaga Hiyori.Hikari Atsuko has a beautiful face with pink hair and a sweet smile. But unfortunately, the Student Council President forbids Atsuko to talk while on a mission and she must wear a mask. Hiyori, has a beautiful face and is shy. Misaki has short hair and is rather quiet, but is also a beautiful and tough girl. While Saori, is a terrible strategist. She has long blue hair that is almost knee-length. Saori has a cold attitude and doesn't smile, or even never. However, Saori loves and cares about others, especially her squad. For them, Saori will do anything to protect them, especially Atsuko. She even became a hitman to support her friends. Until one day, the four of them entered Arius Branch Highshcool. However, at that time things were not going well. An Antagonist entered Arius and became the Student Council President which made Saori and her friends have to submit to her. Saori and her friends were told to carry out missions until they were overwhelmed.))

One day, Saori and her friends went on a mission. However, they faced quite a heavy obstacle. They fought without giving up until they finally won. However, they were all badly injured from the war. However, Saori suffered the worst injury. When Hiyori wanted to treat Saori, Saori refused and told Hiyori to treat Atsuko first. Then, Saori could only lean against the wall while enduring the pain.

Saori: "Arghh... bastard."