Zhutian Check-In System

At the beginning, the time travels to the eve of the Fourth Holy Grail War, and you get the sign-in system of the heavens. On the first day of signing in, you get the character card of Minato Namikaze, replace Ryuunosuke Ubu, summon Tamamo Mae, and conquer the world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.