Ithos

Ithos has not a single clue about the pleasures of life. It seems as though nothing is worth his interest, save for research. To him, even eating and sleeping are a nuisance. If it weren't because he had to maintain his vitals, he would've gladly given up these two things as well.
What's shocking, however, is that someone like him actually has pets. Sometimes, people would chance upon him with a cockatiel on his shoulder or head. His pets are highly talented, a stark contrast to their owner. They're extremely enthused about the beauty of music and have already mastered plenty of tunes, be it a children's song or a trendy pop song.
Some curious people have asked Ithos where the cockatiels came from, to which he'd simply say they were his family's pets but were now in his care exclusively. Nevertheless, what's certain is, although he hasn't expressed adoration to them, he has never acted irked either. Judging by the cockatiels' smooth and slick feathers and pudgy shape, they are clearly well taken care of.
Perhaps unlike his typically unkind manner of speaking, Ithos is honestly a tender person...? This remains to be determined.

"When we received the neighbors' complaints and rushed to the scene, we quickly discovered that room 0316 was the source of the stench. Captain went to knock on the door, but there wasn't any sound in there, so we forced our way in upon determining that nobody was home. What greeted us caused many rookies to throw up at once. Of the family of six, the grandfather, father, mother, and two daughters were killed. It was simply horrific. The only survivor was the son, the eldest of the siblings. He was in the room and browsing through reading materials at the time, seemingly oblivious to everything that transpired. The medical examiner told us that owing to the degree of decomposition and deliberate contamination of the scene, it would be tough to find any useful evidence, and even their cause of death remains undetermined.
According to witnesses, the son had come home over two weeks ago, which is to say that he did not report this for the entire duration and continued living in the room. In addition, he was the one behind those deliberate contaminations; he claimed he was 'doing experiments.'
Needless to say, he didn't admit to being the murderer, but when we asked him why he contaminated the scene, he alleged that he was purely searching for a way to save them. Such a reason naturally didn't convince the detectives. When asked why he did not respond when we knocked, he said he had hit a roadblock in his contemplation and didn't want to face any disruptions... All of us were of the sentiment that he must be a lunatic. However, in spite of him topping the list of suspects, we indeed did not have proof. There wasn't any clue at the scene, and he had an alibi, so we couldn't convict him.
Thereafter, we engaged several mental health experts in hopes of getting his statement once again, but it was then that he went missing. Even the higher-ups prohibited us from continuing the investigation for the reason that he had gotten a trustworthy guarantor and that he would never commit a crime. With that, the Gronru Familicide turned into a cold case. Some people theorized that he had obtained protection from Source Citadel in view of his academic contributions, while others speculated that he had already changed his identity entirely to work for Night Chains. I guess we'll never know. Maybe he's not even in this world anymore..."
—Excerpted from Page 56 of "The Mysteries of the Gronru Familicide Case"

Yet another failure.
Seeing that the patient on the operating table was beginning to turn into a Deep Sleeper, Ithos ended this life before the patient would lose their identity as a "human." This was something they had agreed upon beforehand - should the surgery fail, the patient wished to die a human.
Few people were willing to go under Ithos's knife for this gamble, most of whom were terminally ill and were already counting down their days. Instead of spending their last handful of days in dread, they might as well go for it; if they were lucky, they could gain a brand-new life as an Ascender. Alas, to date, the success rates remain minimal.
Ithos left the operating room and bumped into a scholar from the Ascension. The scholar eyed the young Ithos, who had only recently joined the Citadel, and advised, "Don't be discouraged. There have always been plenty of people researching how to turn regular people into Ascenders, but to no avail. I've seen your paper on genetic medicine. It was an interesting read."
Ithos nodded, then suddenly halted in his tracks and walked back in haste. The scholar went on, "Whoa, you're a real hardworking one. Don't you need to eat?"
Ithos behaved as though he didn't hear that at all. Afterward, people found him unconscious in the operating room, thoroughly wounded and running a high fever. He had used himself as the test subject in an attempt to execute his idea, and it was a success. He became an Ascender. Reportedly, the first thing he said upon waking up was, "I get it now. Human bodies are inherently deceiving; this is a sort of self-protection. All we need to do is to get rid of the body's ability to deceive."
It was said that he had done a fairly reckless surgery on himself, suppressing some of his senses. When that scholar who spoke with Ithos came for a visit, Ithos was writing a report in the hospital bed. The scholar skimmed through it and queried, "You plan on turning all humans into Ascenders?"
"This is the only way to protect everyone in the current world," replied Ithos without even looking up. "No one should be left behind."
"I reckon quite a number of people are not willing to become Ascenders."
"I don't care about their willingness."
"I must say, your ambition is truly arrogant, but it doesn't sound bad." The scholar smiled. "We, the Ascension, will be perfect for you, Ithos."
At last, Ithos raised his head, his eyes visibly flickering with a hint of joy. "In that case, I'm looking forward to it."