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The first time we met, it was an indescribable feeling. Her Wanran smile made him lose his heart. "Cheng Yan, is there a girl you like?" She stood in front of him nervously, not daring to look at him. "Yes" he nodded "That's it..." She felt bitter and a little disappointed in her heart. "That person is you" She raised her head and couldn't believe it "I mean, I like you" he smiled softly "But... Why me?" "There are many beautiful things in this world, but none of them are as beautiful as your smile. I am willing to protect your smile." ...

In this 13.7 Billion-year-old universe, there once were two major civilizations. Pangu civilization and ancient angel civilization. However, as the two major civilizations faced off against the void, the flame of civilization went out. The protagonist, Xing Cheng, is the only surviving Seraph. Faced with today's angel civilization, how can he prevent him from following the path of the ancient angel civilization?