Totsuko is a high school student with the ability to see the 'colors' of others. Colors of bliss, excitement, and serenity, plus a color she treasures as her favorite. Kimi, a classmate at her school, gives off the most beautiful color of all. Although she doesn't play an instrument, Totsuko forms a band with Kimi and Rui, a quiet music enthusiast they meet at a used bookstore in a far corner of town. As they practice at an old church on a remote island, music brings them together, forming friendships and stirring affections.
As a group of university students go out for a night on the town, a sophomore known only as "The Girl with Black Hair" experiences a series of surreal encounters with the local nightlife – all the while unaware of the romantic longings of "Senpai", a senior student who has been creating increasingly fantastic and contrived reasons to run into her in an effort to win her heart.
The story begins when Berry, an average girl from an average home, meets Hack, a girl who looks like a boy. Charmed by Hack, Berry meets up with the team Hack leads, the Ghost Detectives Club. Members of this club are “socially dead,” working invisibly within the digitally controlled society of Tom Sawyer. As she works with the group, Berry learns about Zero, a mysterious figure who lurks within Tom Sawyer’s underground. She and Hack decide to chase down this figure, and in time, the truth behind the city is revealed...
In a bet to prove whether ghosts or aliens exist, two high schoolers face terrifying paranormal threats, gain superpowers and maybe even fall in love?!
