Small upgrade system - Chapter 778 - - Calm before Storm.

Haruto Hayase was a normal high school boy in his third year, living a quiet life until his younger sister, Haruka Hayase, joined the same school. Haruka’s beauty and charm made her the center of attention, quickly becoming the school’s prima donna. But when a notorious gang leader set his sights on her, he did everything in his power to protect her—only to fail tragically. Haruka was brutally assaulted and tortured, and Haruto himself suffered an agonizing death. However, in a twist of fate, Haruto is given a second chance, waking up a year before the events that shattered his life. Armed with the mysterious ‘Debauchery System Slave’, he vows to exact revenge on those responsible. This time, he will use his newfound powers of the system and charm to seduce the loved ones of his enemies. From their mothers, sisters, and lovers to their closest friends, Haruto will make them his. His enemies will suffer as he steals what they hold dearest, ensuring their downfall in the most devastating way possible.

“I can’t believe my eyes. The ice lord actually kissed a man. God, help me!”

The world suddenly entered an ice age, and as the apocalypse arrived, over ninety-nine percent of humanity couldn’t withstand the extreme weather and died.

In his previous life, Ye Xingchen didn’t have much food to eat, but in order for his beloved campus belle to have something to eat, he didn’t hesitate to open the door during the apocalypse. In the end, however, all his survival resources were snatched by several strong men the campus belle brought, causing him to die tragically in the cold.

Reborn one month before the ice age, Ye Xingchen swore to make these people pay tenfold.

He awakened his spatial abilities, possessing a three-hundred-hectare dimensional space. In this life, he no longer lived just to survive but crazily stocked supplies worth billions and built an apocalypse fortress.

As the ice age arrived, while others were almost freezing to death, he was swimming in a warm pool.

While others were killing each other for a bite to eat, he was savoring an 82 Lafite, eating the finest Kobe beef, enjoying a banquet, and watching movies leisurely.

One day, when some people discovered that Ye Xingchen’s house was stocked with countless delicacies and was warm and comfortable, they went crazy and wanted to rush in.

But they soon realized that this wasn’t just a house. It was an apocalypse fortress that even nuclear weapons couldn’t break open!

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In the depths of the underground world lived the descendants who were born and raised by feeding on the teats of beasts.

These individuals with special abilities and enhanced physical abilities were known as dungeon babies.

Amongst them, Kim Jin-Woo was born in the labyrinth on the lowest floor.

“I’ve never tried to become strong. I just wanted to survive.”

This is a story of a lowly tunnel digger who ascends the throne to become the king of a labyrinth.