[The emperor husband I poisoned to death has become my college roommate!]
Xiao Shou, a modern-day student about to start college, transmigrated to ancient times at the age of eighteen and became the Crown Prince of the Xiao Kingdom.
He thought he'd landed in a wish-fulfillment story, but it turned out to be a story about a kingdom's downfall.
The political situation was unstable, and wars broke out constantly. His emperor father was incompetent and lecherous, while corrupt ministers controlled the court. When the capital fell and the kingdom was destroyed, Xiao Shou, the Crown Prince, had already prepared a length of white silk to hang himself with.
But then an arrow shot through the air, and the emperor of the empire fell in love with him at first sight and saved him.
And just like that, he went from a fallen kingdom's crown prince to an empress.
After ten years of lying low and biding his time, he took a forbidden drug to bear the emperor a crown prince. Years of careful plotting culminated in a cup of poisoned wine that killed the enemy who had destroyed his kingdom, and he reclaimed the throne.
After that, he instituted reforms, strengthened the kingdom, and devoted himself to governing and raising his child. At last, he brought about an age of peace and prosperity. But frail and frequently ill, he died a few years later.
From crown prince to empress and, at last, emperor, Xiao Shou opened his eyes and discovered he'd somehow returned to the present!
Looking at his phone, air conditioner, food delivery, and games, Xiao Shou burst into tears of joy. He thought it had all been a dream, like Zhuang Zhou dreaming he was a butterfly.
He happily set off for a wonderful college life, only to open his dorm room door and find the former emperor, the husband he'd sent off with a cup of poisoned wine, inside.
"..."
[What do I do? The ex-husband I personally killed is now my college roommate. Help, I'm desperate!]
He thought it was just a coincidence, but then he noticed his ex-husband looking at him with an increasingly familiar, unsettling gaze. Even the way he treated Xiao Shou was just like in their previous life.
Oh, no. Could his roommate be the reincarnation of his emperor ex-husband?
[Sweet-looking, cunning-as-a-black-fox beauty bottom × ruthless, hopelessly love-struck, terminally crazy guard-dog top]
[He really did inherit the throne in their previous life, and the bottom had an intersex body and gave birth. In this life, he's a man and won't have children!]
[The top was reincarnated with his memories, and so were their two sons!]
[The top is genuinely terminally love-struck and absolutely feral. He adores the bottom! How much? His wife poisoned him to death in their previous life, and he still loves him in this one!!!]
Theme: Love isn't everything. Love yourself first, and stay rational and clear-headed.