What Illness Does Kagaya Ubuyashiki Have In Demon Slayer?

Mom is very biased. Every night, she will pour me a glass of milk before bedtime, simply because my grades are the best. My twin sister, Melody York, and my younger brother, Jason York, have never received this treatment before. On the night before my college entrance exam, Mom brings me a glass of milk before my bedtime as usual. But the next day, I end up collapsing in the exam venue even though I've always been healthy. Because of that, I miss out on the college entrance exam, causing me to fail. Meanwhile, Melody, whose grades have always been terrible, miraculously gets into an outstanding university. Mom consoles me, telling me that it's fine to just repeat the senior year. Every night, she prepares the same glass of milk for me as usual. Before the second college entrance exam, my cousin, Annie Wood, is staying over at my place temporarily. She wants to have a taste of my nighttime milk, only to get berated by Mom for being shameless. But halfway through the exam, I suffer from an intense stomachache all of a sudden. After that, I get sent to the hospital for emergency treatment. That year, I end up failing the exam again. But Annie, who comes from a vocational high school, gets into a pretty good university thanks to her scores. The entire family is elated, to say the least. But the fact that I have to repeat my senior year for the third time makes me the butt of everyone's jokes. I don't understand why all sorts of health problems will plague my body when it's time for my college entrance exam. When I'm taking the exam for the third time, I tell myself that this is my final chance, so I mustn't slack off no matter what. Three days before the exam, the only food I've ingested is the food offered by the school's cafeteria, just in case I run into more health problems on the day of the exam. But on the night before the exam, Mom brings me yet another glass of milk before bedtime.

300 years ago, humankind created their own nightmare. Demons, are originally humans but the lust for power changed them inadequately, this is humans own doing. Around 300 years ago, a large asteroid bombarded the earth's very ground. This is the beginning of the birth of demons. This meteor was large, but out of the blue, a mysterious lifeform is intact in it's very core. A human named Cruzius Akiyoma was intrigued when witnessing these menacing looking creature. He interpret this as a blessing from heaven. He then owned the creature and conducted an experiment. He was surprised when he saw the structure and building blocks of life of this creature. He obsessedly pictured this as a one stepping stone through human evolution. He extracted the DNA of the creature and modified it in able to merged it to human DNA. Without any hesitation he then merged his DNA to the DNA of the creature. He is willing to offer his body to attain his goal, thus sacrificing his body is necessary. After the merging, he was surprised because nothing in particular happened. But, he suddenly felt a surging power circulating through his body. He screamed in pain as his body is gradually changing. Darkness fell upon humans as the scream of the first demon engulfed the sky, seas, forest, and fortress.

Lyon Aschere, well-known as "The Reaper" is the youngest person to be an official Royal Knight of Avaritia and is also the personal Knight of King Charles Avaritia II eldest daughter Princess Jiniya Avaritia. But with him being a lowly commoner with high aptitude for magic and martial arts his status as a Royal Knight was hidden from the public. A few weeks after being appointed as a royal knight his left eye began to ache, showing him disturbing images, thinking that it was only a matter of hallucinations he disregarded it. Until the Princess found out about his problem, the princess being kind to her childhood friend, decides to help him figure out what is happening to his eye, venturing out to different Kingdoms looking for answers. But to their surprise the world was riddled with secrets that dated back from thousands of years. The story follows Lyon and Jiniya as they try to understand what powers lie behind Lyon's eye.

A devil child who was raised by a devil hunter like a human child. Under the auspices of the devil hunter He finds love, affection, shelter, and knowledge without knowing his true self.

After my rebirth, I signed a whole body donation consent letter. In my previous life, my boyfriend's junior was a self-proclaimed miracle worker who claimed she could cure any illness—even late-stage cancer. Every time that woman worked her magic, the same disease that she'd cured would reflect on my body. Overnight, I was diagnosed with over 300 types of diseases, and the bones in my legs were shattered. Just when I was going to talk to my boyfriend, he stormed in holding a checkup report. "You're unbelievable, Cynthia! You had AIDS and didn't tell me? Who was it? God, I can't believe I actually pitied you. You deserve every disease you have." … Yvonne took my place as a healer respected by the world of medicine. I languished and died under excruciating pain and the public's insults. Moments before my demise, her smug cackle reached my ears. "Your life for hundreds. You should be grateful I gave you this chance." Then, my eyes snapped open. And this time, I finally understood how she had done it.

Ito Akihiko the main protagonist also called as the 'cursed child' due to a past incident has the ability to see spirits from birth. To save the world from turning into something inhumane Akihiko and his comrade Asato Ayame venture through the world with spirits and creatures from stories, myths, rumours and even legends! Will they be able to change the future that lies ahead of them? Well, find it out yourself...