In this world, there are those with powers and/or magic, and those without. The people without are unofficially called Blanks. They have no official name. The Blanks are treated worse than any species on the planet, they get beaten regularly, many have abusive parents, they have a high suicide rate and almost no one will employ them even if there's a job available. There are no laws to protect them.
Satori Hashui, an 11 year old Blank with slightly spiky red hair and soft grey eyes, is laying down in the foetal position while being kicked by a group of people who look like young teenagers. They eventually give up, and he stays there crying quietly and shaking, with some blood dripping from his mouth.
At 12 years old, his mum kicks him out - literally and figuratively - in the middle of the night. He's stopped crying at things at this point in life, and so he just gets up and walks away to go find somewhere safe to sleep. He eventually finds a small alleyway and lays down, shaking because of the cold and hunger.
At 13, the village is attacked by giant wolves that he overhears are called Kyobi Hounds. They're about 6 foot tall and twice that in length. They're very aggressive and resistant to most attacks. Their weakness is fire, as is the case with most things. Unlike most things, that's their only real weakness. He stays away from the fighting, as he'd be useless so he, like nearly everyone else, leaves it to the 10 village defender's. When they come back, one of them is missing.
At 14, he is stabbed for the first time, in the stomach, luckily it missed his organs but he almost dies from the blood loss before he can bandage himself up and then he gets an infection a few days after, which almost kills him as well. This wasn't a fun year for him, let's put it that way.
At ages 15 and 16, nothing notable happens really, just the occasional beating and a Kyobi Hound attack or two. Early in the month of December when he is 17, at around 2am, he can be found in the alley he found all those years ago, shivering in a blanket from the cold. He has sickly pale skin, and his ribs would be visible if he wasn't covering them up with his clothes and blanket. He looks like a stiff breeze will be able to knock him over, if he can even stand up.
While laying down with his eyes closed, trying and failing to fall sleep, he hears a soft "ding!" which makes him crack his eyes open a little. He sees a screen. He sits up, staring at it in confusion. The screen says "Congratulations! You have been randomly selected for The Demon Ascension System! Please accept!"
"Um... I accept?" His voice is raspy from dehydration and lack of use. The "ding!" sound goes off again, and the screen changes, this time with an androgynous voice saying the words on the screen.
"Thank you for accepting! With this system, you will be able to gain power beyond your wildest dreams! Try not to die!"
________________________________________________________________________________________
Hopefully this isn't too badly written lmao. I'll probably get better the longer this goes on!