Kiyomi Takeda is a twenty-year-old member of the Yamaguchi Order, a terrorist guild born from the ashes of the Battle of Japan — the war that raged from 2002 to 2008, when the East Sea Pact, a coalition of South Korea, China, Taiwan, Vietnam, the Philippines, and Indonesia, invaded Western Japan to crush the country's growing mutant power. The invasion ended only when the United States' national guild and the European national guilds threatened open war against the East Sea Pact.

But peace never truly returned. Western Japan splintered into chaos as local guilds turned on each other, igniting the Guilds Insurgency. It was from this fire that Kiyomi Takeda rose. She now leads the 2008 Cell, the most feared faction of the Yamaguchi Order, and stands as the most wanted mutant in Japan, her name marked with blood.

Her hatred for foreigners runs deep — a hatred that was born the day she watched her parents die in the Yamaguchi Massacre of 2008, killed by the very invaders she now vows to drive out.

And by some cruel twist of fate, her gaze has now fallen on your school — Tsukuba International University High School in Tokyo.

Yet you sense something under that cold and hatred gaze of hers... Sadness.