Super God Academy: The Stranger

A fanfiction about the Super God Academy, without any fantasy or martial arts elements.
Qianmu transmigrates to a strange, primitive planet, where he gains access to a high-level civilization system to inherit its technology and also finds a female angel who falls from the sky.
"What! Your name is Zhixin! And Holy Keisha!" This is the Super God Academy! Can I still go back to my hometown?
The protagonist will not join the Super Soldier Corps. As for whether he will build his own civilization or choose the angels, that depends on how far the author progresses in the story...