I Summoned the Great Witch Dragon at the Beginning, but I Really Didn't Cheat.

The protagonist travels to the wizarding world and starts the awakening system with too much source material to use up. Others meditated for several years to condense the spiritual runes, but he did it casually. It was difficult for others to summon a skeleton, but he directly summoned an army of three thousand skeletons and programmed a system. The frost dragon that no one else could ask for was forcibly summoned by him with a spell to break the spell, and he signed a clan servant contract on the spot. In the Abyss Auction House, he dropped tens of billions of source materials to seize the treasure, and all the demons were dumbfounded. Rule crystals, origin crystals, and fragments of the Book of Destiny all went into his pocket. The origin of the snake god wants to take him away? He swallowed the soul of the Abyss Elder with his backhand and refined his divine power. Are the guardians of the Shadow of Destiny looking for trouble? He controls the origin of destiny and can kill instantly with one move. From the wizard's apprentice to the protagonist who holds the Book of Destiny, there is only one word from beginning to end - fun! The whole book spans the summoning of the undead, abyss trading, and interstellar duel. The protagonist crushes all the way without giving his opponent a chance to make a comeback. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.