Ideo Hazama

"...Welcome to my world. Until yesterday, I was extremely talented, but still ultimately human. But now, I am the ruler of the Demon World having received the omniscient, omnipotent power. The denizens of the Demon World call me the Demon Emperor. You have been blessed with a once in a lifetime privilege to behold me. Your fate, whether you live or die, is now entirely up to me. You'd best put on a good show." - Ideo Hazama

Ideo Hazama is the main antagonist of Shin Megami Tensei If.., proclaiming himself as Majinnou (meaning Demon Emperor).

Biography
Abused by fellow schoolmates, betrayed by his first and only love, and comforted only by the school nurse daily, Ideo Hazama is a student of Karukozaka High School. The corruption of the abuse from his schoolmates forced his mind to become warped. He tries to summon a demon within the Gym (which explains why the gym has a summoning circle within it), but the summon goes out of control and opens a portal leading to the world of demons known as Makai, where, Ideo Hazama rules as the Demon Emperor, Majinnou, the school is sucked into, leading to the intro of the game. He first appears when you answer all of the questions when you make a new game, appearing as a vision when you are just about to leave the school to Makai, as a statue, informing you on what world you are in, what boss is in the world, how far you have progressed and how said world applies to humanity, and as himself (not a statue) near the end of the game when the school is empty. When you find him within the school (obviously the principal's office), he will reveal his demon form, Demon Emperor. After you defeat the Demon Emperor, if you managed to get Reiko, the Ring of Deliverance will shine, allowing you to enter his mind. While you are in his mind, it will reveal some of his (if not most) backstory. After you reach the centre of his mind, he will briefly scold you and transform into the manifestation of his warped mind; a giant fetus demon with Hazama acting as the right eye, ankle-deep. Defeating this boss means beating the game and leading to, in comparison with the other endings, the true ending (Reiko).

Reiko Ending
By defeating Hazama, he expresses his hate for losing, then turns into a younger version of himself, basically calling you a meanie for picking on him like everyone else before crying. Reiko comforts him to stop crying, he does, then turns back to normal age. She promises that she will not leave him anymore, then you are warped out of the room. Reiko informs you that Hazama's warped mind is turning to normal, and that you cannot stay and must leave. You automatically trace your steps back, and during this, Reiko tells that Ideo was originally a kind person, but there wasn't the least bit of love from the people around him. She won't ask you to forgive him for what he has done, and promises that he will not do that again. She then tells you that the time you both wandered in Makai was bitterly hard, but it was fun. But for her, it was a journey to save Ideo. She then thanks you, and thanks to you, she was able to save Ideo and be with him again. She tells you that she probably won't see you again, but if you knew each other when things were normal, you would have been great friends. She then again informs you that his mind is returning to normal and that you quickly must get out. Right before you leave, she tells you that you cannot take your minions with you, and that you must set them free. Saying yes to this will free the minions and let them tell you that they will never forget you. Saying no just lets you leave with the minions. Afterwards, the school is safe, and everyone is glad to be back in Earth. The nurse tells you that Hazama confided what was on his mind to her, and that she should have listened to him. Afterwards, the school anthem is sung. It then tells, quote:

"Ideo Hazama and Reiko Akanezawa disappeared...

and the school returned to normal. Though many of the students who didn't come back were classed as missing and caused a small public sensation, eventually they were all forgotten. Peaceful days had returned. However... For the people left behind after Ideo Hazama and Reiko Akanezawa disappeared, the same old days would never return... The countless demons they fought and befriended really existed. Now that they learnt of the other world and its inhabitants, could they continue to live ignoring it and the demons? When the worlds meet, when everyday life is destroyed and peace lost, then they will come."

Trivia

 * He is Reiko's brother.


 * The nurse is the only person within the school other than you and Reiko near the end of the game. It is most likely because she was the only one to comfort him during his abuse from fellow schoolmates.


 * Ootsuki-Sensei tries to appeal to Hazama numerous times.


 * Apparently, Ideo is the only student to have different clothing from every other student, excluding the higher grade students.


 * He is, by far, one of the most annoying bosses with the highest HP in the SMT series. (exceeding even YHVH's HP of 17080)