A certain college girl who's loved books ever since she was a little girl dies in an accident and is reborn in another world she knows nothing about. She is now Myne, the sickly five-year-old daughter of a poor soldier. To make things worse, the world she's been reborn in has a very low literacy rate and books mostly don't exist. She'd have to pay an enormous amount of money to buy one.

Sagara Sousuke isn't your typical high school student. He reads military enthusiast magazines; he responds to questions with "affirmative;" he brings grenades to school in his bag. Though everyone at school takes him for a hopeless military geek, Chidori Kaname thinks there might be something more to him. When their plane is hijacked in the middle of a field trip, Kaname's instincts will prove correct: Sousuke is an elite, mech-piloting mercenary... and he's here to protect her!

A bicycle crashes into me one night, and the next thing I know, I’m a baby? Getting reincarnated in another world populated by humans, demi-humans, and mythical beasts is certainly not the turn I thought my life was going to take. I especially didn’t expect to be carried off by a wolf and given into the care of a one-armed former knight. Now, I’m trying to repay him by rebuilding the family inn and healing his arm with alchemy.

未だにフラグの立たない真尋にやきもきするニャル子。
そんなある日、親友の暮井珠緒に相談すると、こんなアドバイスが返ってきた。
「八坂君と二人っきりで遊園地にでも行ってくればいいんじゃないかな？」
「珠緒さんの提案の仕方、イエスですね！」
そうして口八丁手八丁で真尋を丸め込んでお出かけの約束を取り付ける。
場所は宇宙の一大テーマパーク、地球ルルイエランド。
しかしそんな二人をやすやすと送り出す八坂家の面々ではなく……!?

In the first book in this series, eight-year-old Drake is snatched up by King Roland's soldier and taken to the castle. He is to be trained as a Dragon Master. At the castle, he is joined by three other young Dragon Masters-in-training: Ana, Rori, and Bo. The Dragon Masters must learn how to connect with and train their dragons - and they must also uncover their dragons' special powers.