Problem Children All Come from the Otherworld

[Blurb revised on 2024/6/2] - "I'm so strong. It'd be such a waste if nobody knew!" -So the strongest Onmyoji in human history, Michimoto Yuki, loves spending her free time in the arena and picking up disciples. During her tenure, she fought Yamata no Orochi, taught three versions of Hiromasa, killed the demon king Muzan, and picked up Yoriichi and Kokushibo. She even made a trip to the Taisho era, got into an argument with Nage Sherlock, and brought back a law student with a red ribbon on his head. Watching the number of swordsmen living at the citadel continue to grow, they initially worried that their master would eventually end up in a love-triangle-from-hell situation. Fortunately, all her disciples graduated successfully and were packed off back to their original worlds before Michimoto Yuki stepped down. After successfully retiring, Michimoto Yuki was sent by the Time Government to a world one hundred years after her "death," where she eagerly continued her disciple-picking ways. But her new disciples were not only all problem children, they also all came from the underworld. Still, as the strongest, Michimoto Yuki has a very simple and direct solution: Problem Child No. 1: I want to join the Port Mafia~ Michimoto Yuki: Come fight me! Problem Child No. 2: I'm going to kill every last monkey. Michimoto Yuki: Come fight me! Problem Child No. 3: Hey, I'm the strongest human! Michimoto Yuki: Come fight me! - Reader's Guide (Content Warnings): 1. The heroine is an overpowered, invincible female lead and the strongest human. It's pure wish fulfillment, with no romance, and her only ambition is to make her name go down in history. 2. The main story is Jujutsu Kaisen, with a very small amount of Bungo Stray Dogs. The heroine's past and her disciples appear in flashbacks or side stories. It mixes together a wide range of works, so readers looking for a single character should proceed with caution. 3. Everyone has a one-sided crush, so feel free to ship whoever you like. The main story has no pairing, but the bonus chapters include the heroine's first-love story. - Theme: I want to become stronger.