The Most Talented Magical Engineer! Great Silver

There exists a legendary engineer who goes by the name, Silveria and is given the nickname as Great Silver. He has created numerous life-saving and life-improving inventions throughout his years. Although no one knows his face, he continues to be an ideal leader on Earth.

However, one day that legend got into an accident. Someone found his identity and tried to take him hostage.
Though, Silveria didn't like this outcome and decided to take his life instead of following the criminal.

Silveria then wakes up in an unknown room with two girls by his side. What might be waiting for him?