My House Is a Magic Power Spot ~Just by Living There I Become the Strongest in the World~ - Chapter 30: Simple Home Remodeling

Bad End Night is a novel by Hitoshizuku-P, based on a series of Vocaloid songs, the NighT Series. The plot revolves around eight actors trapped in a never-ending play, seeking a way to escape.

In his past incarnation, Lu Xuan was the youngest Celestial Lord that the universe has ever seen!
An accidental rebirth brought him back to a thousand years before, where the Earth had just begun its spiritual reawakening. When he stepped onto the way of cultivation for a second time, he swore to rewrite all injustices suffered in his past life, and defeat all enemies that dare stand in his way!
Let invincibility be his cultivation and the path he treads. In this life, it is his destiny to be invincible!

Before going to college, an ordinary high school student went to celebrate and got drunk. When he woke up, he found himself in a completely different world. There was a big sect, the approaching sect entrance examination, a slum where his body’s previous owner lived, and a shared memory about a missing young girl.

When he got tangled in a fight with a few punks in this different world, he fell off a cliff and miraculously found himself still alive, with two more voices ringing inside his head. They were Sword Master and Saber Master. In the company of them, he continued to find out more about this whole new world. He took the sect entrance examination, entered the sect, met a strange man in black, and even participated in a major competition of the sect to have a chance to win over his peers!
In this whole new world, he was born again and got to explore the fantastic martial world!

- Description from Novelupdates

[Simulation shall commence.]On this fateful day, the world was stunned by the appearance of ancient animals that were supposed to have gone extinct for millions of years. Huge sinkholes appeared in every corner of the world, becoming a tunnel for the ancient animals to emerge to the surface.Humans have found an answer to one of the biggest mysteries in human history. Hollow Earth is real. Here, humans will wrest their lives to explore this new world that has existed for thousands, if not millions, of years underneath them.Before the start of his exploration, Clovis came across a place called ‘Another World Mall.’Dwarven Sword, Magical Elven Clothes, or Giant Race Toy? Everything can be found in this ‘Another World Mall.’As an aspiring Subterranean Explorer, how would he utilize this ‘Another World Mall’ to become the greatest explorer of all time and find the truth about the simulation?