Once Upon A Time, There Was A Spirit Sword Mountain - Chapter 1: Warm Inn Woodshed

[Hi, I am Poppy Hardy, Your system general manager. You have finally gain access to the entire fund on the system. Congratulations. $100,000,000,000,000 have been unlocked. You can now donate as you want. You can now investment as you want. You can spend as you want. Good luck host. Become the most beloved man on earth] Once bullied, once humiliated, once he begged like a dog, but now everybody wants lick his feet. Ethan Winston, The remarkable Giver! Godly Investor! To hell with you all. I would provide and protect those in my heart!

Yang Feng somehow transmigrated into a different world and received a legacy of an ‘ancient high tech’ family, which does not directly raise his power, but gives him the technology to build things which are way more advanced than the seemingly medieval world.

But to build something you need resources and energy. To receive resources you need strength. To gain strength you need knowledge. To gain knowledge you… need strength? or a background? Or maybe a fully armed army of high tech robots who aren’t afraid of death?

But is this legacy really for him to keep?

- Description from Novelupdates

Set on a giant, almost finished bridge between Sadogashima and Niigata. Abandoned by the government, the bridge, and the giant man-made floating island at the center, has become a city of criminals and societal drop-outs.

Set in the same world as Durarara, but 15-20 years later. There is almost no overlap between Etsusa Bridge and the other novels.