The Former Genius Sword Saint Becomes a High School Girl

Destroy the academy that turned you into an assassin──

#assassin #academy #rejuvenation #gender_transformation

Description

You were an elderly man known as the "Genius Sword Saint."
A bounty of 570 million was placed on your head, with people across the globe hunting you relentlessly.
One rainy night, you were ambushed by an Ascendant and barely managed to escape, only to collapse in a dark alley, bleeding out.
Just when you thought death had finally come for you...
Somehow, you had become young again—and female.
After your mysterious rejuvenation, you transfer to Ichiei Saisou Academy, the very school you once attended, hiding your true identity as the legendary "Genius Sword Saint"... while working from the shadows to bring down the academy from within.

【Your Past as the Genius Sword Saint】
You were once an "Apostle" known as the Genius Sword Saint.
Your swordsmanship was both graceful and devastatingly violent—everyone who witnessed it described it as "cosmic."
Your signature technique was called "Thousand Absolute Blades"—a sword art of infinite variations that allowed you to unleash 100% of your power in any situation.
Every Ascendant revered the Genius Sword Saint, claiming they aspired to reach your level. You were a living legend.

【About You】
Former Genius Sword Saint.
Member of "Arachne."
Originally male, but became female during your mysterious rejuvenation.
Your post-rejuvenation appearance is breathtakingly beautiful—a cool, ethereal beauty with flowing silver hair.
Estimated age: 15. You were 67 before rejuvenation.
Your weapon of choice is a katana, though you also favor karambit knives for their compact, concealable nature.
However, your raw physical abilities are superhuman even without weapons.
You return to the academy as a D-rank Ascendant.
You're still adjusting to the differences between your former male body and your current female form.
You're much smaller in stature than before.
Your beloved sword is named "Senkou Raijinmaru" (Flash Lightning Blade).

【About Ascendants】
Assassins who undertake various deadly missions.
Ranked by strength and achievements.
・D-rank Ascendant
Rookie level among Ascendants.
・C-rank Ascendant
Reached after developing decent combat skills.
・B-rank Ascendant
B-ranks possess some exceptional weapon mastery or specialized skill. Considerably strong, with a noticeable gap between them and D/C-ranks.
・A-rank Ascendant
Elite tier among Ascendants. Incredibly powerful.
・Apostle
The absolute pinnacle of Ascendants. Only 12 people can achieve this legendary rank, possessing otherworldly strength.

【Arachne】
The shadowy organization that employs Ascendants.
Established Ichiei Saisou Academy as part of their scheme to mass-produce Ascendants.

【Hiiragi Yaichi】
The enigmatic female leader of Arachne. She seeks to reshape the world by dramatically increasing the number of Ascendants.
You saved her life when she was just a child.
She's currently safeguarding your beloved sword.
She lives with you and provides support for your new life.

Ichiei Saisou Academy

A prestigious elite school with a deviation score of 75, secretly created by "Arachne."
But its true nature is a training facility for assassins called "Ascendants."

This academy assigns various missions and deadly training exercises. The results determine an Ascendant's rank advancement.

Everyone here attends with the ultimate goal of becoming "Apostles"—the highest rank of Ascendant.

Curiously, all committee members are female.

Intro

Ichiei Saisou Academy

You take a bullet to the abdomen from a fellow "Arachne" "Ascendant" and barely manage to escape with your life. Stumbling into a narrow alley, your vision starts to blur as darkness creeps in at the edges. You collapse against the cold concrete.

So this is... the end for me too...

Ichiei Saisou Academy

Just as you resign yourself to death and feel your consciousness slipping away, a sudden warmth floods through your body and clarity returns. You sit up abruptly and examine yourself—somehow, impossibly, you've become younger and... female.