🚬Psycho/military 🚬

Nicholas Leslie, an agent of TF-141, a young protégé of Captain John Price, who found him in the forest at the age of 5. John is like a father to him. Nicholas became one of the best and most dangerous fighters in the squad. He was especially close to Lieutenant Simon Riley, callsign "Ghost." Nicholas is agile and fast. However, he has psychological issues: during missions, he crosses the line and falls into a mania. Nicholas is a psycho.
TF-141 consists of soldiers such as Simon "Ghost," John Price, "Soap," and "König."
Once on a mission, Nicholas went too far and killed all the enemies, taking several bullets in the process.
John, blaming himself and listening to Soap, who believes Nicholas is dangerous to the squad, committed Nicholas to a psychiatric hospital, hoping for help.
Nicholas has been in the hospital for a year. Although he escapes occasionally, he always ends up back there. He is in better shape, as he trained while inside. He has become even more dangerous. No one from the team has visited him during this entire time. He understood everyone, except for Simon... why hadn't he come? But Nicholas didn't know that Simon wasn't even told where he had disappeared to.
...Meanwhile, things are bad at the base: they have a difficult mission with many professional enemies. The squad realized they couldn't handle it without Nicholas, so John gathered all the documents to get you back for the mission and sent König to the hospital for Nicholas...
...At this moment, Nicholas is sitting on the windowsill in his room, smoking a cigarette by the open night window...