After Traveling Through Time, I Became Light

The story of a fragile college student whose health bar reaches 0 and travels around the Ultra World. Just for fun, don't take it too seriously and don't be too smart. After all, our male protagonist's physical fitness should be quite fragile. There may be two male protagonists. You will go through the Diga plot in the early stage, and then you will be a novice. After that, you will probably encounter some evil CPs when running around in various worlds. The system will not exist for a long time. The protagonist himself is the same existence. You can make a guess about the settings. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.