Zettai Shonen: Yousei-tachi no Natsu - Tana

is the first volume of the light novel adaptation of the Absolute Boy anime series. This volume adapts the first 12 episodes of the anime series. It is written by Tatsuya Hamazaki and Illustrated by Sunaho Tobe. It was released under the Dengeki Bunko Imprint in August 2005.

Synopsis
"What do I want to do ..." Ayumu Aizawa, a boy who can't find himself, comes to a rural town called Tana to spend the summer with his father who lives away. Tana's lifestyle is unique and I'm always confused by Ayumu. One day in such a summer, Ayumu meets a boy like a fairy, "Wakkun". That was the beginning of everything. A mysterious event that happens around Ayumu. A series of people that are intertwined through it. What does Ayumu find there? The much-talked-about fantasy anime, the long-awaited novelization.

(source: Amazon JP - Translated)