"The Dragon Book" which thoroughly covers all dragon and shows adventurers the way to their dreams. Said book is a best-seller representing "Sword and Friends & Co." but its contents are based on nothing more than the the dubious stories of adventurers that haven't been verified, as a matter of fact it's riddled with mistakes. The head of the editorial department of Sword and Friends & Co. starts planning a complete revision of "The Dragon Book". Two of which who were selected are a rookie reporter with a child-like appearance, Izumi, and the beastman bodyguard, Alf. Pursuing the truth about dragons, the compiling journey begins.

Miku-4 is originally a doujin web comic written by an amateur writer Nagimiso. Crypton authorized him and East Press to publish this manga. This is a sad and touching story of Hatsune Miku, a shy android created by Crypton. She grew up with the help of the people she met during her journey and gained a human mind by the devotion of an engineer.