Planet Pulverizer: A Mortal's Ascent - Chapter 350: Complexity

In a modern world where cultivators need a place to cultivate or vent their boredom, there are private businesses that set up instance dungeons with the aid of technology and cultivation magic to enable cultivators to train and commoners to experience the life of cultivation. They are called dungeon suppliers.
Xie Jin's one and only dream was to be a dungeon supplier and when his only relative passed away, the relative's inheritance gave him a plot of land and surprisingly, a 'System' Module which the relative had previously used.
With the help of the system, Xie Jin decided to pursue his dream of becoming the number one dungeon supplier.

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction.

As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!

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…!?

Yun Muxi was a young scriptwriter in the 21st century who once time-traveled back into the olden days of China.

There, she met and fell in love with the Emperor, Duanmu Gongyu. After a torturous heartbreak, the duo separated and never saw each other again.

When Yun Muxi returned to the modern world, she ended up working with a rising actor, Gong Yu, who happened to be the same man she once loved with her whole heart. As soon as he set his eyes on her, the feelings of yesterday came back and he was determined to make her his again.

As Gong Yu tried to woo Yun Muxi repeatedly, she realized that she found it hard to resist his charms. However, the duo was trapped in a series of events that made falling in love impossible.

The modern-day Yun Muxi now has a daughter while the father of the child remained unknown. Gong Yu, on the other hand, had developed a history of heart attack.

On top of that, their story unraveled with shocking truths at every turn. The star-crossed lovers were faced with steep challenges that constituted the endless list and many sacrifices had to be made.

Would they eventually be given the chance to love freely?

- Description from Novelupdates