Sign in at the Beginning to Summon the Invincible God General

Oath to the mainland, call to be respected! Alien beasts, demons, vampires, gods, as long as you have the ability, you can summon them! The sign-in system for teenagers starts, and you will receive a summoning card upon signing in! Here, every summoner is a legend! Ps: This book is also known as "The Beginning Family Is About to Be Destroyed" and "The Beginning Sign-in: Traveling Through Time in a Sleep"