Erotic Adventures in the Omniverse: Vampire Lord got too many wives - Chapter 451: Uninvited Guests

In a world transformed by dungeon gates and awakened classes, Hunters fight monsters to earn power, fame, and fortune.Frank? He awakened as a Trader. F-Rank.No spells. No sword skills. Just one system window… and 500 dimensional tokens.Everyone laughed. Told him to quit. But Frank didn’t need fireballs—he had something better:『Dimensional Trading System Online』Connects to other worlds. One trade per day. Limited inventory. Unlimited potential.He sold candy to bug warriors. Swapped solar chargers for alchemy potions. Bought a sword technique with instant delivery.Then, he opened a booth beside a dungeon gate… and started outselling real vendors.Now, the same Hunters who mocked him line up to buy.Guild-backed merchants want him gone.And Frank? He’s just getting started.He’s not hiding. He’s not cheating.He’s building a business—and a blade arm to match.When monsters strike, Frank fights beside his customers.When dungeon loot drops, he flips it across worlds.From a broke rookie to a cross-realm powerhouse, Frank isn’t just surviving—he’s becoming the most dangerous F-Rank in the business.

“Host, you are about to load the sci-fi adventure system, please be prepared”
“Three Body”.
“Wandering Earth”.
“Interstellar”.
“Gravity”.
“Mars Rescue”.

Uh …
As the youngest full-time professor of mathematics in the history of Jiangcheng University, Pang Xuelin was a bit stressed.
Uh …
The hardest science fiction, the best times.

- Description from Qidian

In the far future humanity is threatened by monstrous beings called kaiju now humans have expanded across the galaxy with the development of new techniques and fleets of mechs.Alto a young boy with dreams of becoming a great mech pilot is forced to be a mech designer. He finds a strange technology that opens his eyes to the vast secrets of the galaxy, now with a new purpose Alto must become something the world has never seen before.A/N: Just wanna do a good sci-fi book