The Sinful Life of The Emperor - Chapter 208: Price

She was the Empire’s top-tier elite agent, skilled in both medicine and poison. One day, she transmigrated into the body of a foolish, mentally disabled, and hideously ugly waste. But when her soul entered, the Phoenix Maiden returned, shaking the heavens and the earth! Those who wronged her will be repaid a hundredfold. Those who insulted her will pay back a thousandfold. Call her useless? Wait and see what true genius in cultivation looks like. Call her a fool? Wait and see who the top-tier alchemist really is. Say no one wants her? Watch as the strongest man follows her everywhere. From now on, divine beasts and handsome men will walk by her side, and she’ll roam the heavens and earth as she pleases.‘Qingcheng, from now on, I’ll help you manage the household and raise our children. This world and I will belong to you!’ said the scheming man with a flattering smile.The woman coldly met his gaze and replied, ‘The world and its empire are within my grasp. Now, get lost!’

Cairn is a prince who is already tired of ruling. Faced with an imminent coronation and an overbearing father, he wants nothing more than to drown his responsibilities in cheap liquor and poor decisions. With the help of his sister, he hatches a plan to escape the clutches of the throne once and for all. It all goes terribly wrong, and Cairn finds his priorities shifting in the face of unimaginable tragedy. The change of heart comes too late, however, and Cairn dies. He reawakens to find himself transported ten years in the past. He immediately begins to plan for the future, only to discover his killer has somehow followed him. To succeed, Cairn must unite the kingdom and discover the motivation of his killer, using as many tries as it takes. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++I exhausted pretty much every time loop story ever written and decided to write my own. You'll see a few similarities here between this story and some existing stories, at least initially. There's a lot of inspiration drawn from both MoL and Re:Zero, though in terms of pathos and darkness, this story leans more towards the latter. Be warned, it is something of a slow burn. The main character will grow and become powerful, but a theme of this story is that power comes slowly and often at great cost.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Haruka, consulted by a friend who ran into a ghost at school, goes to the Movie Research Circle to see a man with mysterious powers. However, the person who meets her there is an affected young man with terrible bed hair and sleepy eyes. What does Haruka consult him about? A confinement and murder case at a women’s university, a false suicide case… The great detective who can see the spirits of the dead, Saitou Yakumo, takes these cases on in this astoundingly high-speed spiritual mystery!