My Mental State Is in Jeopardy

I was a poor sick person, but no one believed I was sick. Until an agency called the Seventh Agency introduced me to a new hospital. Facing the new doctor's consultation, I used Commander Ikari's actions to participate in the round-table discussion in my mind, while describing my condition to him in fear of reality—— "Mr. Sakaguchi! Help me! I seem to have schizophrenia. There is a group of people having a party in my head!" My No. 1 Personality is Osamu Dazai. He is my three-time weakling, but his personality setting in my mind is that of a Mafia leader. He said that he was betrayed by me, a subordinate, and hanged to death by my own hands as the leader. My No. 2 Personality is called Nakahara Chuuya. He is my kind neighbor three times, but his personality setting in my mind is also a shady one. He said that he was deceived by me as an undercover agent, and in the end he was designed by me to die from losing control of his supernatural powers. (Don't ask me why he still has unscientific settings My No. 3 Personality is called Gojo Satoru. He is my beautiful classmate three times, but his personality setting in my mind is that of the heir of a large feudal family. He said that I was his servant who was greedy for power and wealth. I coaxed him with sweet words, destroyed his eyes, and caused him to die miserably. My No. 5 Personality is called Jiang Guling. He is a beautiful colleague at the place where I often go to work, but his personality setting in my mind is that of an undercover agent sent by the police to a certain black organization. He said that I was the ace killer of the Black O organization. I deceived the trust of his friends by pretending to be pitiful. After abusing his friends, I personally exposed his undercover identity and executed him. …… I don't understand why an honest and ordinary me has so many strange personalities, and among these personalities there is another me, and that me is more like a psychopath. But too many personalities were quarreling in my mind, and in order to preserve my precarious mental state, I decided not to dwell too much on it. ———— Morishita Ryo, male, eighteen years old, registered as a semi-awakened superpower user, with a superpower prediction level S, and is detained in the seventh agency. Super powers: "Parallel Theory" ——The person with this ability is suspected of encountering a singularity impact, and the actual awakening of the ability does not match the prediction, so he was transferred to your custody for re-determination of the ability and evaluation level. Looking at the transfer letter in front of him, there is also a man who is anxiously waiting for his diagnosis. Without checking for a moment, Sakaguchi Ango's hands were held, and various familiar faces flashed through his mind in an instant, as well as various quarrels that refuted the previous man's words. After waking up, he pushed up his glasses expressionlessly. ——"You are not sick, but your mental state is in critical condition." Read the introduction: ① An ordinary person protagonist with abnormal brain circuits ② Liar personalities (? ③The personalities in the brain come from parallel worlds, and the world where the protagonist lives is a comprehensive world, so there may be two identical characters quarreling across the protagonist's mind (??? ④ Probably able to write in first person Purpose: Mental stability is important