It can't be helped that her subconscious avocation is reading people and psychologically slithering her way around them to keep her esteem in check. But when she crosses path with a tall blonde who is the combination of a sarcastic jerk, a disdainful asshole, an anti-social boy and a tightly-shut treasure chest, her curiosity is piqued. Tsukishima Kei becomes her biggest puzzle.

He's blunt and loves to rile other people up. No wonder Tsukishima Kei is disliked by some. Still, it made him interesting - at least in her opinion. She desired to to be the first to figure out his bemusing personality, more than anything. Crossing paths with each other will cause changes to happen not only to the two of them but also the direction of what their fates will become.