[Jujutsu Kaisen] What If Ryomen Sukuna Had a Sister?

(Part Two is already in the works, go check it out!!)

Sukuna version:

When Sukuna gets a little sister, will he be a doting big brother or a doting big brother...?

Though she is Sukuna's little sister, she is only human, and will grow old, get sick, and die. But no matter how many times she is reborn, Ryomen Sukuna can always find her without fail. Then one day, Orimoto Nanako waits and waits, but her brother never comes. So Orimoto Nanako decides: this time, she will go find her brother herself!!!

After searching for a thousand years, she finally finds him, only to discover that her brother is inside the body of a pink-haired boy???

When Orimoto Nanako sees her brother for the first time in a thousand years, thinking of all the hardship and effort she has endured, she can't stop the tears from streaming down her face.

“B-Brother?”

Ryomen Sukuna, who had appeared after Yuji ate one of his fingers, suddenly thought that voice sounded incredibly familiar. He turned around and saw a pink-haired girl who looked a lot like him.

“Nanako?”

“Brother!”

Orimoto Nanako threw herself into Sukuna's arms.

Sukuna scratched his head. Even after a thousand years, he still had no idea how to cheer up his little sister.

The little crybaby wiped her tears and scolded him:

“Onii-chan, you idiot!”

Nanako was not only adorable but also sweet and well-behaved. In stark contrast to the arrogant Sukuna, she naturally became the beloved mascot of the Tokyo Jujutsu High students.

The students: “Aaaaaah! I want a little sister like that too!!!”

Sukuna, grinning smugly: “Want one?”

The students: “Yeah!!!” (nodding furiously)

Sukuna put an arm around Orimoto Nanako, who was focused on eating fries and completely oblivious to what was going on, and looked smug.

“Not a chance. She's my very own imouto!”

The Strongest, Gojo version:

Orimoto Nanako's favorite things are potato chips, soda, and her brother. Satoru Gojo made excellent use of that.

“Call me big brother.”

Nanako flatly refused. “No. Onii-chan is the only one who gets to be called that!”

Satoru Gojo tempted Nanako with potato chips and soda.

“Then just call me Gojo-nii-chan.”

The little crybaby hesitated.

Satoru Gojo pretended to sigh regretfully.

“I was going to give them to you, Nanako, but if that's how it is...”

Nanako made up her mind immediately. “Gojo-nii-chan!”

Satoru Gojo grinned wickedly. “Got her!”

Yuji version:

After learning about Yuji Itadori's connection to her brother, Orimoto Nanako decided to stick with Yuji at all times.

Yuji stared blankly at the little sister who had suddenly appeared.

“Um...”

Orimoto Nanako answered eagerly: “Yes! Nanako is Brother's little sister, so I'll protect you, Yuji-nii-chan!”

Yuji looked at Nanako's radiant smile and thought having a little sister was pretty nice. (Secret siscon.)

In summary:

Her brother is inside Yuji-nii-chan's body. If Yuji-nii-chan dies, her brother dies. If Gojo-nii-chan protects Yuji-nii-chan, he is protecting her brother too.

“Then Nanako will protect everyone!”

The main pairing is Ryomen Sukuna, since he's Nanako's brother, after all.

The side pairings are Yuji and Gojo.

Theme: Raise the banner of the siscon (brocon)!