MTL - The Rise of Space Technology - Chapter 257 , great opportunity

Pressured to get married or lose her father's financial support to pay for her mother's medical bills, Joanna Baker, the illegitimate daughter of the Baker family, is devastated when her boyfriend chooses another woman over her on their wedding day.Joanna, feeling distraught, witnesses a man in a wheelchair proposing to his girlfriend at a restaurant. The girlfriend's rejection and subsequent insult for his disability left everyone stunned.Feeling a shared sense of betrayal, she approaches the man with a vengeful proposition.“Excuse me, sir. Your girlfriend dumped you, and my boyfriend chose another woman over me. Let's get married for six months and get revenge on them.”What will Joanna do when she finds out the man she proposed marriage to was none other than Alexander King, the heir of the wealthiest family in NYC? He was also the cold CEO of King Multinational, with a hidden identity, Salvatore Black, whose name caused even presidents shiver? Has she just signed a deal with the devil?

Born as the daughter of the last martial artist of this era, that is Yeon. Her father is the world’s greatest fighter and is respected by everyone. The only problem was…… “I know it’s impressive, but I don’t have to follow in his footsteps, do I?” Her stubborn father’s dream was for his daughter to also follow the path of martial arts. Naturally, Yeon’s life was filled with grueling training. Living a dull life, Yeon’s only hobby was reading romance fantasy novels before going to bed. “If only I could live as a lady once……” After making a wish, Yeon fell asleep and entered a novel as if she were dreaming. However, her enjoyment is short-lived when she realizes that it’s not a romance fantasy, but rather a martial arts novel. “It was my dream to be a possessor, but of all things, it had to be a martial arts novel, and in the body of a supporting character who dies early!” Feeling indignant and weeping, she suddenly notices her own reflection in the mirror. It was a glamorous image. ‘Hold on. Does this mean… I could become a lady?’ Moreover, in this world, there was a man who looked exactly like the male lead in her favorite romance fantasy. He was handsome and talented, but with a wretched backstory. “Things are going to be different now.” The fate of a supporting character who dies early? Forget about it. Whether they’re followers of the devil or a heretical sect, even the worst villains don’t scare her. Why? Because she is the strongest possessor in history. This is the story of Yeon’s adventures in the martial arts world, as she stumbles along in pursuit of everything she desires.

The low-ranking behemoth, the iron mountain is invincible in the horizontal push, and it is called the king of the backing.

- Description from novelbuddy

A normal guy gets hit by a truck and isekai'd. Why? Because trucks are apparently some cosmic loophole. He decides to be a dungeon, because it sounds weird and interesting to be one. Is it? Let's find out.