A collection of seven short stories, three of which were specially drawn for the tankoubon release:
Chapter 1: Wicked Girl {Mashoujo (魔少女)}
A bittersweet story about a sensible teacher and delinquent student and the difference between romantic feelings and love.
Chapter 2: Short Hair no Niau Hito (ショートヘアの似合うヒト)
The main character goes on a trip to Northern Europe with her friend and the senior she had a crush on in high school. Her love was never requited, but even now, she still has not forgotten her feelings for her...
Chapter 3: Keiko and Fuuko and the End of the World {Sekai no Owari to Keiko to Fuuko (世界の終わりとケイコとフーコ)}
A story of jealousy and the desire to monopolise.
Chapter 4: Dark, Marsh, Nightwood {Numa, Kurayama, Yoru no Mori (沼、暗闇、夜の森)}
Kiko can see ghosts, and much prefers communicating with them than with real people, but has a crush on a living girl, Isotani.
Chapter 5: A Date With Suwako-san {Suwako-san to Date (スワコさんとデート)} - bonus
A side story linked to the main cou