Why Does Zenitsu Blush So Much In Demon Slayer?

He died killing the Demon King. He woke up sixty years too early. Now the monster is a young man. And he is running out of reasons to stay away. --- Lysan Dusk was the hero who saved humanity. He killed the Demon King, ended the war, and delivered the world from suffering, and his reward was betrayal. He wakes up in a young student's body in a dormitory room of a magical academy, and the calender shows that the date sixty years before he was born. The world outside hasn't broken yet. The war hasn't happened. Lysan's plan is to keep it that way by staying completely out of it. Fail his combat exams, spend whatever borrowed time he has left, living a quiet life, where nothing requires him to be a hero. The man who will become the Demon King, the most feared monster in history is still young and beautiful, with pale grey eyes that find Lysan across every crowded room like he is the only person worth seeing. Lysan knows what those eyes will become. He has looked into them across battlefields, spent a lifetime seeing them in nightmares. He never expected it to feel like this up close. Roman is everything Lysan was warned about — magnetic, dangerous, impossible to ignore. Everyone except Lysan, refuses to be charmed, refuses to feel anything at all. But now, he is failing spectacularly at them because Roman keeps finding him. Keeps watching him and making Lysan's carefully rebuilt walls feel like paper. Lysan knows the ending. But for the first time in two lifetimes, he is wondering if the ending can change. If the monster can be loved instead of killed. If staying is braver than running.

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 new sparks ignites Alanna's boring life when she gets unceremoniously kidnapped and taken to the underworld where she meets Zeron, a demon who is the king of the ice witches. Alanna thinks she has heard it all until she discovers that the king has been terminally ill for centuries and is dangerously controlled by his darkness, as a result of a curse that had been placed on him as a child. Furthermore, Alanna finds out that she is the king's cure and in order for the king to be free from the curse, she has to bond with him in every way, including marriage. Having nothing to lose, she agrees to help the king. Soon, she's falling in love with him. But will her innocent love be enough to save him? Will her passion remain unrequited, or will she finally succeed in breaking the icy walls surrounding the demon king's cold heart?

A normal girl just as usual working every day. This changed when she met a demon. She made a contract with the demon to help her. She just want to use her demon, but she find that she can't help fall in love with the Demon

The next day I woke up, I am now the fiance of the Duke of Dubois Castle, or known as Lemon. “I am a demon who lives by desire and greed, you have yielded with the contract that you have exchanged with your life?” “Then what do you want?” “I want the whole of you Veta Le Blanchet, not just your blood, heart and soul, it is the whole of you.” Theroux Claude, the third prince of the kingdom. “Lady Le Blanchet, just how can you stand still this demon duke? If you ever get tired of him, you are always welcome to my palace.” Another troublesome man, my childhood friend when I was at the academy, Durand Gagnon. “I have attained this nickname not just because I follow all his Majesty’s order, but because I want to have a stronghold in the knight position so that I can support you my Lady, remember that my oath is only for you.” Then, what is my cousin thinking that he would say such things? “Sister, I have finally inherited the title of the Baron, please come back to our fief, and I will make sure to bring back the glory of our family!” As I try to relinquish the past, the more troublesome it becomes. Is clinging to the tiny bit of my life a wrong choice? And why is the temple spying on me? “Lady Le Blanchet is the only descendant of the family, you shouldn’t involve yourself farther with the Demon Duke.” “It’s done my Lady, as long as it is you, I can give everything, even if I destroy this Kingdom.” Hold on, just what on earth this demon wants from me?

"Master, do you miss this apprentice?" Lips painted in bright red ticked up in a sharp smile. Her eyes were a pool of dark red, like a swirl of the finest wine. One jaded hand in his throat, nails slightly digging in the skin there, the other was on his cheek carefully caressing. The clashing of both gestures were confusing, but Rion's mind only provided one instinctual response; to run away as far as possible. ----- Rion Ren, one of the strongest sword masters in the world, had to make a difficult decision to hand over his apprentice, Ruby, to the Demon Master when Ruby's real identity as a descendant of Demon Sovereign was revealed. Three years later, Ruby who had successfully taken the reign of the Demon Realm, came back to take revenge on her master that had betrayed and abandoned her in the hand of cruel demons. Rion swore on his life as a sword master, he only wanted to protect those who were precious to him, but how did it manage to turn the whole world into chaos? How would Rion face his own apprentice in a battle between life and death?!