The third installment of the Chihayafuru trilogy.
As an unexpected typhoon bears down on a small tropical island, a group of students trapped at school find themselves forced to put aside their personal issues and work together. Not only to save themselves, but possibly the lives of everyone on the planet!
Teiichi Akaba is a student at a prestigious private male high school known for producing important politicians and bureaucrats. His dream is to become the prime minster and make his own country. To help achieve his dream, he wants to become elected as his school's student council president. The elected student president receives privileges and a better chance for promotions later in the political & bureaucrat world. A power struggle takes place surrounding the student election.
The year is 2XXX and Keiko Town is an over-industrialized stretch of blackened factories pumping out thick layers of smoke that cast it in a perpetual state of semi-darkness. The citizens of Keiko Town fare no better and walk around their dilapidated town in a stupor of hopeless despair. In an abandoned factory in an obscure corner of town lies the secret base of Hikari Club. The teenage boys of Hikari Club despise the adults of their community and have taken it upon themselves to eradicate what they perceive to be the evil and filth of the grown-up world. To accomplish this, they build a machine with artificial intelligence and dub it “Litchi”. However, with the boys on the cusp of puberty and turning into adults themselves, their own world has begun to collapse around them.