I Can Only Attack Single Targets, so I Can Only Do That.

In reality, Qin Liao is always good-tempered towards everyone. He is always smiling during the day. Only at night can he truly relax. And that game is the only comfort that accompanies him every day! After an uncomfortable and long night's sleep, he opened his eyes and found himself in a familiar yet unfamiliar world. How is this world so similar to the world in the game he plays? And he seems to have turned into a certain character in the game. Also, if he remembers correctly, this character seems to only be able to attack single targets...