A Blue Lock Fanfiction: Margin of Error (Itoshi Rin x OC)

Shimizu Sachiko was supposed to be a background character of the story. She was quiet, overlooked, and often buried figure behind her data sheets. But when she's revealed to be the anonymous sports gambler "Oracle," Ego pulls her into the spotlight as Blue Lock's top manager. Her first assignment? Handle Rin Itoshi, Japan's #1 egoist and the world's coldest striker.

They don't get along.

He thinks she's soft. She thinks he's impossible. But the deeper she studies his stats and flaws, the more obsessed she becomes with turning him into the ultimate striker. And Rin finds himself rattled by the girl who speaks in simulations and stats, who dares to challenge his training, who never backs down even when she's shaking.

When ego meets ego, it's war. But somewhere between cold stretches, late night strategy sessions, jealous stares, and unspoken touches... war turns into something else.

I do not own Blue Lock, only my original characters