No System? I Hug My Thighs

Yu Yang, who slept until midnight, was woken up by a phone call? Call me on my own mobile number? What lunatic is kidding me by using an account-changing app? Yu Yang answered the call with an unhappy look on his face: "Who are you?" Yu Yang in the apocalyptic world: "I'm Yu Yang, help me, I'm about to die." Yu Yang from the world of cultivating immortals: "I, Yu Yang, am busy making elixirs. Don't disturb me." Yu Yang from the Interstellar Conquest World: "I, Yu Yang, am driving a battleship. What are we doing?" Yu Yang from the Magical World: "I, Yu Yang, am preparing a potion. What can I do?" ... Yu Yang looked at the phone in confusion, "You all call me Yu Yang, who am I?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.