Transmigrated As Satoru's Father (A Jujutsu Kaisen Fanfiction)

Chapter 15

Satoru stood in the newly repaired training area, his small figure framed by the serene surroundings. He was clad in his usual training attire, his white hair gently swaying with the breeze. With his eyes closed, he took a deep breath, centering himself.

"Focus." Satoru muttered.

Satoru visualized the flow of cursed energy within him, like streams of water moving through a complex network. He recalled his father's instructions, the descriptions of "Blue" as a powerful vacuum force—cursed energy condensed to create an impossibly strong attraction. The mental image of collapsing everything into a singularity was clear in his mind, yet summoning it still felt like trying to grip smoke.

'Come on...you can do this,' Satoru thought, his brows furrowing slightly.

The air around him began to stir faintly, small vibrations rippling outward.

Toji watched silently, standing a short distance away with his arms crossed. Despite his Heavenly Restriction, which made him unable to see cursed energy or techniques directly, he could still sense the pressure building around the boy. The faint hum in the air and the subtle environmental shifts were telltale signs.

'Not bad, kid,' Toji thought.

He couldn't see the "Blue" forming but could feel the energy. It was like standing near the edge of a vortex—powerful and raw, yet incomplete.

However, Satoru's concentration was broken as he felt Toji's gaze on him like a weight. His blue eyes snapped open, annoyance flashing across his face as he turned toward the man.

"Can you stop looking at me? You're distracting me," Satoru said, his tone sharp for a child, though his voice was slightly pout.

Toji smirked, unfazed by the boy's irritation. "I'm just doing my job as the bodyguard," he replied, his voice casual but with a hint of teasing.

Satoru's eyebrows twitched, his irritation growing. "Hah? But you haven't even signed any contracts with Father yet!"

Toji shrugged nonchalantly. "Didn't need to," he said. "Your old man's got a big mouth, but he keeps his promises. I'm just... taking an early start."

Satoru narrowed his eyes, studying the man carefully. "So, you're doing this on your own accord? That's nice for... someone like you."

Toji chuckled softly at the jab, his smirk lingering. He could tell the boy was still wary of him—and rightfully so. Seeing your father almost killed by someone wasn't exactly the best way to make friends. But Toji didn't care about earning Satoru's approval. He had his reasons for being here.

Seijuro's offer wasn't just about money, though the five billion yen every four months was impossible to ignore. For the first time in Toji's life, someone hadn't looked at him like a weapon or a freak. Seijuro's words, the way he referred to him as a person rather than just a killer, had struck a chord he didn't want to admit existed.

Seijuro had offered him something no one else had before: stability. A chance to live without constantly being hunted or judged. A place where he could build something—even a family someday. It was a tempting escape from a life filled with blood and betrayal.

"Zenin," Satoru said, breaking the man's thought. "If you're here now, does that mean you won't try to kill Father again?"

Toji raised an eyebrow, caught off guard by the blunt question. "Your old man's safe from me," he said, shrugging. "A deal's a deal."

Satoru studied him for a moment longer before letting out a small sigh. He turned his attention back to the training ground, still not fully trusting the man but deciding to let it go.