Konoha's Medical Ninja: One Punch to beat up Madara - Chapter 218 - : Have You Seen My Prime?

Sangyan turned into a widow known to bring misfortune to her husband. Despised by her in-laws and disdained by her own family, she volunteered to retire to a remote estate to live out her days. At this moment, she caught the eye of a tyrannical emperor with a strange illness - being near a woman caused him unbearable itching and relentless vomiting.Hence, the 26-year-old emperor had never favored any of his consorts, let alone sired any heirs. The imperial harem constantly pressured him for offspring. The common people also yearned for a royal heir. When they learned that the tyrant held affection for Sangyan, the widow with the ill-fated destiny, the entire nation opposed their union.Eventually, the entire country pleaded with Sangyan to bear children for the sickly and tyrannical emperor...Beauty widow with a deadly fate VS Emperor with allergy to women

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.

Aria and Ivy are twin sisters whose father has gone missing for three years. They have left no stone unturned to find him, but all in vain.

In an unusual encounter, a business tycoon, Noah Allen Carter, falls in love with Aria. Meanwhile, Ivy approaches Joshua Martin, who is a friend of Noah, to help find her father and in the process falls for his charms. What happens when the sisters find that the people they love are the ones behind their misery?

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“Ivy, sweetheart. Please come back. I love you.” Joshua cried holding her hand. However, there was no response from her.

“Ivy, please say something. Don't be like this.”

Joshua kissed her hand, but Ivy had long made up her mind. Only a miracle could make her come back to him.

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“I hate you, Noah,” she shouted.

“I love you, Aria,” he replied, pulling her towards him.

“No, you don't.”

“Yes, I do. Falling in love with you is the best thing that ever happened to me. I will always love you; today and forever.”

To survive, the unfortunate Gong Qiying, who became the lord of the Sein Dungeon, had to make his dungeon extremely “hellish”:Doors that “cannot be opened from this side”,treasure chests “triggering teleport traps”,a three hundred and sixty-five mile journey from the starting point to the BOSS room with no place to rest,monster knights with great bows on either side of a narrow bridge,and sinister ambushes around corners.There's also unavoidable visits to poisonous pits and hidden paths...Additionally, well-known fighters like Isshin Ashina, the Furnace Knight, Rajang, and the Scourge Legion bring unexpected surprises!Various unique rewards such as the Flaming Sword, Murky Hand Scythe, Rapid Slash Longsword, Sacred Oath, and Flame Empowerment will make you too happy to contain your joy!Gong Qiying: The most important thing in my dungeon is to ensure adventurers have fun!