A sort-of book that contains some pieces of information regarding Tensura's universe, power, skills, and/or characters. The information is LN-based, thus WN has nothing to do with this. Free to use by everyone. Those who want to write a Tensura fanfiction without too many "mistakes" in power description might as well need to read this. And please read Author's Notes before you actually start reading. WARNING: THIS BOOK IS BY NO MEANS A PERFECTLY 100% ACCURATE SOURCE OF REFERENCES AS SOME MISTAKES MIGHT HAVE BEEN MADE WITHOUT ME REALIZING IT AS THE WRITER. THERE HAVE BEEN SEVERAL TIMES WHEN PEOPLE SPOTTED FATAL MISTAKES THAT I HAD MADE BUT WASN'T AWARE OF. [The background image used for the cover is taken from wallpaperaccess.com]