The Ultimate Class: I Relied on the Sign-In System to Fight Against the Demon King

Gu Feng accidentally traveled to the superpower world of the Ultimate Class 1, and also came with a sign-in upgrade system. As long as you sign in every day, your combat power index will increase. [Congratulations to the host, you signed in successfully today and will be rewarded with a combat power index of 100. Please continue to work hard. [Congratulations to the host for activating the hidden mission and receiving the reward: Wang Dadong's physical strength when strong. [Congratulations to the host for signing in for 300 consecutive days and receiving a reward: the weapon created by the mother of weapons, the Sword of Insufficiency, the Sword of Insufficiency] …… Gu Feng, who possesses powerful superpowers, joins the superpower war. Together with Wang Dadong, Xia Tian and the alliance leader, they attacked Demon Lord Diablo. Xia Yu Xia Tian is dead? Travel through time and space to save him! I won't allow you to die, please live well! The Flamebringer is coming to reset time and space? Go back to your space-time management station. …