This is your first time writing, please give me a thumbs up. Please note that the writing is not very good and the punctuation may be wrong. So it's just for my own entertainment. ? ? ? ? The protagonist is an artificial man created by the research institute. Because too much knowledge was input, he became brain-dead. However, he was rescued by the system Si Si before his death. Therefore, he signed a contract with the system and went to various time and space with the system, starting his journey through time and space. ^O^? ? ? ? ? PS: Host PS: It may not be completed, just write whatever comes to mind, so be careful when entering. ^ω^ PS: The CP is unknown, there may be no CP or there may be a CP halfway through←_←