どこかの特異点でも異端の天然理心流として知られないギャラクシー田舎剣法『ジェット天然理心流』奥義の書。

あなたに秘奥義を伝える今日この時に至り、瞼に浮かぶのは辛く厳しい修行の日々。ですが決して辛いだけの日々ではありませんでした。あのキラキラと輝く騒がしくも楽しい異国の地でのひと夏の思い出。謎の魔王との戦い、師匠である私とマスターの夢の共闘、死線をさまよいついに開眼した秘奥義、割り過ぎたスイカ割りのスイカ、のびたのがまた美味しい焼きそば、舌が青くなるかき氷……、すみません、話がそれました。

そうですね、私とマスターの間にもはや言葉は不要。さあ、師匠である私の絶技と遺産を受け継ぎ、銀河を翔ける真の侍となるのです。

―――雲ひとつない青空を超えて

えっ？　だからいらないって！？　そんなー。

The secret technique book of the Jet Tennen Rishinryu, a sword style from a backwater galaxy that nobody from any Singularity or heretical land has ever heard of.

As I impart to you this secret technique today, memories of my painful and rigid days of training return. Yet they are not all painful memories. Those sparkling, dazzling, bustling, fun times spent in a foreign land were but a fleeting summer memory to me. The time I fought against a mysterious demonic king, Master and I (where I was their martial arts master) formed a wonderful united front, the secret technique finally coming into its own after evading many life-threatening crises, a watermelon that exploded and made a mess from a game of watermelon splitting, overcooked yet still delicious yakisoba, shaved ice that dyed the tongue all blue... Oh, I'm sorry, I digress.

That's right. No words need to be exchanged between Master and I. Now, speaking as your master in martial arts, you must inherit my legacy that is this ultimate technique to become a true samurai who will tear through the Milky Way.

...To go beyond the cloudless blue sky.

Eh? You don't want it? WHY NOT!?