Summoned as a Demon Pet, Signed into the Ancient Holy Body at the Beginning

My name is Su Linglong, a genius student from Qinghang College, known as the greatest genius in history. He was reborn three years before the world's demise, in order to reverse the situation. I decided to use the ancient formation to summon an invincible demon pet. Unexpectedly, During the summoning, a human familiar with level F was summoned. The summoned monsters of other students around me are all giant beasts, angels, and demons. And my summoned beast is just an ordinary mortal. ……………… My name is Lin Han, an ordinary person from Blue Star. Today, when I was lying flat at home, I was sucked into a black hole. It actually became a girl's summons, activating the sign-in system. Sign in at the designated location and you will receive rewards. Sign in at Qinghang Academy, obtain the ancient holy body, and physically defeat the peerless beast! ! ! Sign in at the Forbidden Land, get the Xuanyuan Sword, and kill an angel with one sword! ! ! Sign in to the duel arena, obtain the Dharma World, and crush the devil with one hand! ! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.