A Journey to the Earth's Core [Infinite]

Zhuo Muxiao is suddenly pulled out of his university study group and into an underground world full of monsters.

Bad news: The monsters have more teeth than the professor has hair.

Good news: The "study group" is fake. Zhuo Muxiao's real extracurricular activity is assassination.

Zhuo Muxiao's expertise comes in handy. He kills the monsters and earns the chance to leave the underground world, but the moment he returns to the surface, he loses all his memories of what happened down there.

Unaware of anything, Zhuo Muxiao sets out on the road to the underground world once again.

Bad news: This time, he's not so lucky.

Good news: After dying, he opens his eyes and finds he's back in the days before his first trip underground. He's gained the ability to be reborn, and it isn't a one-time thing. More importantly, this time he remembers everything that happened both above and below ground.

Zhuo Muxiao also discovers that a man who seems cold and indifferent toward him has actually been following him all along...

A roguelike infinite-level novel with unconventional instances, where failing means replaying from the first instance.

Unconventional instance settings

Zhuo Muxiao: No matter how vicious a monster is, kill enough of them and they start to look rather pretty.

Chu Wu: No matter how much you like someone, look at them long enough and you'll start to feel...

Zhuo Muxiao: Bored?

Chu Wu: The more I look, the more I like you.

A laid-back top who can slaughter his way through anything, but gives up and does nothing once he's tired and worn out

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A vicious and ruthless bottom who's a bad person through and through, but decides to save the world after the boss really gets on his nerves

Theme: Persevere and keep improving yourself; a true gentleman knows when to turn back.