Time Travel: Possess a Beautiful Girl and Serve as Her Military Advisor

(No system + light daily life + humor + imagination) Xu Qinghe, after twenty ordinary years, was hailed as a rare genius for only one year. However, just when he was about to reach his peak, he was attacked by a villain, causing his soul to travel through time and losing all his memories. In order to retrieve his memory and avenge the villain, Xu Qinghe resolutely possessed the body of a beautiful girl who was in danger. As a series of complicated events unfold one after another, the truth hidden under the water begins to gradually emerge. Alien invasion? Coming to the priest? The villain turned out to be... Myself?