There's Something Wrong With This Account - Chapter 407 - : 407, [Younger sister, watch your brother show off]

He was on his way to buy some beer to celebrate his acceptance as a civil servant when he was suddenly isekai’d by truck-kun.

Ye Fan accidentally obtained a billion crystal technology system, and since then, he has become out of control.

Android: You do n’t even have a mobile phone system. I want to make it impossible for you all!
Ye Fan: Sorry, I researched it out, it seems to be more powerful than yours!
BMW Benz: Our engines are famous all over the world!
Ye Fan: Sorry, I do n’t have an engine, I only have magnetic levitation, and the speed is only a few times that of yours. Do n’t worry, take your time!
…
Enemy: Is he still human?
Who can stop this!

- Description from Qidian

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

After dying from a gunshot, Reo meets the goddess Ophelia who offers him a rare chance. Instead of being reincarnated with no memory of his past, he can come back to a new world with the offer of receiving a legacy as well.Reo gets to choose from six legacy cards, each offering different powers. One card is blank—a risky option with slim chances of getting a good legacy from it. Ignoring the goddess’s warning, Reo picks the blank card and to both their surprise, he gets the SSS Rank Dark Dragon Legacy, a type of legacy so rare that only one human in Ophelia's world has ever had it.Reo is Reborn as Silva, he’s quickly labeled a failure by his noble family because he lacked magical ability at the moment , due to his legacy not yet awakened. His father, embarrassed and harsh, orders his death, but his mother begs for his life, sending him away to be raised by another family in a far-off town.Silva awakens his Dark Dragon Legacy, growing at a rate that was beyond normal, as he tried to understand the task the goddess had in mind for him, while still enjoying his new life.He also made out some time to pay his father back