The Abyssal Dragon Awakens When the Stars Fall

In the era of cosmic colonization in the near future, humans have established multiple colonies in the solar system, but they encounter the unknown threat "Reaper" from the void. The abandoned space station "Ark Station" in the Kuiper Belt and the mysterious building "Gate of the End" are closely related to the ancient guardian civilization. Humanity has discovered mechas, resonance stones and other relics left by the ancient guardian civilization, and these technologies are being reversely utilized by the Reapers. The protagonist sisters Cheng Xue and Cheng Yu, as products of the "Dawn Project", are the key to uncovering the secret of Yuanlong.