[FGO] What Should I Do After a Lucky Break Reveals My Sister Is a Chaldea Master?

Sixteen years. How many sixteen-year spans does a life really have?

Ritsuka Fujimaru doesn't know how many sixteen-year spans he'll get, but during his first, he was born in Japan and lived as an ordinary high school student.

During his second, he was reincarnated in another world as a baby savior. After enduring hardship and torment, he fled back to his homeland.

When Ritsuka Fujimaru was six, she watched her sixteen-year-old brother get crushed by a huge truck, his body mangled beyond recognition.

But ten years later, just before she turned sixteen and was about to head to Chaldea for a job, her brother became a necromancer and crawled out of his grave.

"I'm not a necromancer. Just an ordinary spy."

So said the boy, half his body a skeleton, the corner of his mouth lifted in a hint of madness.

"This is a contract. If you sign it, you'll be able to stay alive."

Then what's the price?

"The price? When you consider your own life more important than anything else, nothing can be a price to you."

He could never become a Master of Chaldea, much less save the world.

Because saving the world mattered less to him than staying alive.

As a savior, he had long since failed.

All he could do was watch the images, old as a movie from decades ago, as the young Master on the screen grew increasingly blurred and indistinct, changing into an orange-haired girl.

That was...

His most important, his only, little sister.

His sister was gradually becoming a slave to "salvation."

PS: This is a side story to What Is It Like to Be a King in the Nasuverse? As before, the tone is light and easygoing. You don't need to have read the main story to enjoy this side story. The author's terrible at writing blurbs (not really), so don't be fooled by the heavy-sounding description!

Theme: Everything is for the sake of saving the world.