Sisters, Father and Daughters

"Phew—"

Six-year-old Rin stood in the basement magecraft workshop and took a deep breath, then activated the Magic Circuits within her body toward the transmutation array on the parchment.

In an instant!

A dazzling blue light illuminated the previously dim room.

Under the girl's control, a small crystal rapidly completed its transformation.

Just as she felt she was about to succeed, the flow of magical energy suddenly became unstable.

The flickering blue glow immediately threw the little girl into a panic as she desperately tried to stabilize the magical energy.

Unfortunately, all her efforts ultimately came to nothing.

With a bang, black smoke emerged from the transmutation array. The shaping process, which had already been more than halfway complete, failed completely, leaving behind only a battered crystal.

At the sight of this, tears immediately welled up in Rin's eyes, and her slightly baby-fat face was filled with intense frustration.

Not long ago, she had learned that her younger sister Sakura had become one of the Masters in this Holy Grail War and had even formed a contract with the strongest Heroic Spirit, Berserker.

Even their father, who rarely praised anyone, could not help but commend Sakura for truly inheriting the finest bloodline of the Tohsaka family.

But what about her?

She could not even cast the most basic magecraft.

Just as the little girl wiped away her tears and wanted to try again, she suddenly noticed two figures standing in the dark corner behind the bookshelf.

Reacting on instinct, she immediately took two steps back and demanded loudly, "Who? Who's there?!"

"Don't be nervous. It's me."

With that familiar voice, Sakura slowly stepped out, dressed in a Gothic gown. Lifting the hem of her skirt, she gave an elegant and proper curtsy. "Good evening, Sister..."

And standing behind her was,