Picked up by Master Jiang in the Last Days

In the vast universe, the rapidly developing earth was finally noticed by something. On this day, the apocalypse swept the world. The boy who accidentally put on a watch obtained the crown system that summoned the servants, and brought the story of the deceased sage to open a harem in the apocalypse. God, can this world be saved? When the girl asked this question, the young man appeared on the horizon with his devastating army.