The Strongest High School Student: I Became a Master by Sleeping

(Imagination + funny + many girls but no harem + fun all the way to the end) A man who worked hard to death traveled through time and became a high school student. He activated the master system where sleep points are exchanged for everything, so he became the strongest high school student. Mathematics competition? It's trivial. Basketball game? It's trivial. Online games? It's trivial. Space problem? No matter what, relying on the God-Being System all the way, he stood at the pinnacle of his life. His name is: Gu Chuan!