Douluo: I can become a dragon

New book is coming! "Douluo: Double System Sign-in Bibi Dong at the Start" has been released, please move to support!
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Binding the strongest dragon system, you can turn your mind into a mighty and domineering dragon! !
Protagonist: Let me tell you, I can use energy to level up~ You guys, okay?

Novel keywords: Douluo: I can become a dragon without pop-up window, Douluo: I can become a dragon