What Should I Do About My Jujutsu Kaisen Secret Identities Multiplying in Detective Conan?

It took Jiewu Chi fourteen years after transmigrating to learn that his second life was a piece of technology from a higher-dimensional world, given to him so he could complete a mission. System: We're very considerate! If the Host doesn't want to do the mission, you can refuse, you know~ Jiewu Chi: Great, then I refu System: Ah, but if you refuse, we'll have to take back the reward we gave you in advance, which is your second life! Jiewu Chi: ... Jiewu Chi: Sure, no problem. I get it. I'll accept the mission and get right on it. I love contributing to humanity the most! System: It's so nice that we've come to an agreement~ And so, in the Conan universe, there was: [Gojo Satoru, a police academy student who repeatedly bullied kids and beat up criminals, earning wary looks from his fellow officers, detectives, and FBI agents alike.] His classmates: Well, Satoru is... technically a good person. Don't let appearances fool you. Some time later, the familiar yet unfamiliar young man with white hair and blue eyes sat at the head of the Gojo clan, his blue eyes cold as he looked at them. The "dark side of Japan" and "political parasites" that the police had tried so hard to put behind bars respectfully called him "Lord Divine Child." His classmates: Gojo Satoru, what the hell???!!! [Toji Fushiguro, the strongest assassin on earth. He can catch bullets with his bare hands and throw them right back to pierce a sniper's head. His body can withstand all kinds of damage, and fatal wounds heal completely in just a week.] The desperate undercover agents: Help! Is there really a way to take this guy down? Is he even human? Some time later, after single-handedly backstabbing and killing every assassin sent by the organizations, the man known as the Tyrant gave a casual smile in front of the black-haired boy with spiky hair and stuck his finger into his temple, killing himself. "Think of it as the last favor I can do for you as your father. Happy birthday, Megumi." [Geto Suguru, the leader of the Star Plasma Religious Group, who colluded with bombers, despised people with "no talent," and was called the worst criminal counselor in history. His cult plunged all of Tokyo into darkness, yet he himself was a "traitor" expelled from Public Security years ago.] "If I have power, then I have to protect ordinary people who don't." "I'm a slave to the Japanese people, not Public Security's lackey." The black-haired man in a Buddhist robe walked through the night, his hands dripping with blood, his expression as compassionate as a Buddha. He watched the enemies surrounding him with guns, cold and arrogant, and slowly raised his weapon. "Though this road is rough and winding, the future is bright. I am prepared to die a martyr. You should be prepared to do the same." Warnings: The protagonist is female, but there is no romance. I just want to write a girl. It's a power fantasy (I swear) and has a happy ending. No one learns her true identity, and she will tear up her cover when necessary. All the members of the police academy group survive. No romantic pairings, just friendship and family. Theme: Being alive is meaningful in itself.