Dungeon of Knowledge - Chapter 20: Guilt

We were a peaceful people living in harmony with nature in the vast lands of Lyréanor, but this peace was short-lived when our people were defeated by the dark elves, an ancient people even older than this world. It is said that they arrived in Lyréanor by boat and since their arrival, chaos has been unleashed. Proud of their obscure power, derived from dark rituals, they have raised gigantic armies of monsters whose name is synonymous with terror: ‘Obscurus’.They went on the rampage, and everywhere they went the grass didn't grow back, life died and disintegrated. Seven, there were seven. The seven dark elves known as the Lords of the Apocalypse. A single gesture from them was enough to strike us all down, a single gesture from one of them was enough to decimate us in blood and terror.And as I, Foster, contemplate the macabre scene before me, the bloodied and deformed bodies of my fellow elfes beings, and as death grips my soul, a strange sign appeared before me.[Ding... Activation of the world tree system]

“Hello, A007. My name is Mei Lu, a maid.”

“Bound to you, can you help me find the owner?”

- Description from Novelupdates

Deceived into marriage, exploited for a lifetime as a nanny without pay, and finally beaten to death by her adoptive mother in front of her adoptive father's sickbed, Shen Mianmian's miserable life came to an end.When she opened her eyes again, she found herself back at fifteen. Shen Mianmian vowed to escape her past fate, punish her malicious cousin and adoptive mother, but accidentally shone too brightly in the process.The third-to-last student in school suddenly rose to the top, becoming the candidate fought over by prestigious universities, causing a sensation among all the teachers and students...While others were busy studying, Shen Mianmian was busy starting small businesses to make money...While others were preparing for the college entrance exams, Shen Mianmian purchased the two most notorious haunted houses in Beijing in one go... becoming an oddity in everyone's eyes, they mocked her that even if she had the fortune to buy them, she might not have the life to live in them.While others graduated and were busy looking for jobs, the haunted properties purchased by Shen Mianmian were requisitioned by the government, earning her a considerable amount of demolition compensation.Those who had mocked her couldn't help but slap themselves twice... inquiring everywhere where there might be haunted houses for sale.Shen Mianmian, originally needing to borrow money for tuition fees, used the demolition funds and leveraged her rebirth advantage to buy a suitable plot of land and built a rental building, transforming into a Beijing's wealthiest and most prosperous landlady...One day, Shen Mianmian, carrying a bag of keys and having just collected the rent, was dragged to the Civil Affairs Bureau.“Shen Mianmian, it's time for you to pay back what you owe me.”

Shuu is a member of the literary club that can’t write. One day, he gets a mysterious message on his phone from a girl called Eina, and from that impulsive contact, they begin to exchange messages. They talk of things like their shared interest in novels and grow close. However, when they try and meet, they discover a shocking truth. Eina lives… not in the present, but five years in the past! How will their love develop, parted by five years of nights…!?