Fantasy: After Rebirth, I Also Want to Keep a Low Profile

The male protagonist was originally a quiet and introverted character, which led the school bully to think that he was honest and bullied him frequently, causing him to suffer from depression, and finally ended his life as a good-for-nothing by jumping off a building. But his soul accidentally came into the body of a baby in another world. He originally thought that he would be a waste in this world for the rest of his life, but he accidentally obtained the system and started a cheating life. This is all so unnatural, is it a dream? Is it reality? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.