Deep Space Attendees

Secrets from twenty years ago arrive with visitors from deep space. No one knew that the inconspicuous junior student in the visiting group was the third person in the human extraterrestrial defense line. Until the unknown formation from deep space raided the earth, and the chain of command at the headquarters was completely broken, he stood up and read out the highest authority key. On this day, the curtain was lifted on the dust-laden truth of death twenty years ago and the mysterious visitors coming across the sea of ​​stars.