It describes an era of advanced technology, where everyone can bind a machine that travels through time and space. The production is also mechanically modified, collectively called a system. Everyone can bind to a system and experience a different life. You can also have different experiences, so the system, a time-travel robot, is also popular with the public. There are many processes to make the system, and the materials are rare. The system is a symbol of the rich. The protagonist was immediately bound to the system given to him by his friend when he was surrounded and killed. Who knew that since his friend cheated him like this, how would he solve the problems in the world one after another, and how would he resolve the dangers one after another?,,,,,,