Dread Sovereign: Monster Girl Harem - Chapter 206 25: Meanwhile...

In a world where fate is scripted and power determines survival, Arthur Nightingale was never meant to shine.When he awakens in the world of Saga of the Divine Swordsman, he isn’t the destined hero, the villain, or even a major side character—he’s an extra. A nobody. A mere background figure in the shadow of Lucifer Windward, the overpowered protagonist who will one day ascend beyond gods.But Arthur knows the truth.The world he now inhabits is doomed. The plot is destined for a catastrophic downfall, and the so-called “geniuses” will not be enough to stop the tide of destruction. Armed with knowledge of future events and his own will to defy fate, Arthur refuses to be just an extra.

Xu Yiyang, who was only late in his life when he was middle-aged, returned to 1999 in a dream.

At the turn of the millennium and the turn of the century, he realized a truth:
Not only to be famous early, to start a business and make money, but also early!
………………
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- Description from Uukanshu

Nine harmonic zither chords shook the universe, who dared to not acknowledge the lord?

I am merely a reviewer, albeit the products I review are slightly different. For example, I review quantum computers, artificial intelligence, anti-gravity mech armor, planetary engines, sublight colonial ships, stellar detonators, etc…