Versatile Mage: Mechanical Summoner, Invites Gods to Descend Upon You

[Multiple heroines] + [Invincible] + [Many machines] + [The plot is slightly slow] Tang Yu traveled through the world of full-time mage. Became Tang Zhong's adopted son. At the age of sixteen, he awakened to the Summoning System, only to discover that the stardust contained the mechanical heart of his previous life. The mechanical heart is both a vessel and a natural talent. Bad news: Lock Summoning System! Good news: I'm going to start deus ex machina! Tang Yu can exchange his soul for various machines from the Heart of Machinery. Mechanical beasts, humanoid machines, mechanical magic tools, etc. Primary machinery: Firefox Guerrilla, Heavy Machine Gun Fang Mechanical Wolf, Wind Shooter, Night Hunter... Intermediate machines: Lava Sabretooth Tiger, Lightning Quetzalcoatl, Judgment Angel, BattleGreymon, Celestial Beast... Advanced machinery: Hive Destroyer, Destruction Titan, Gardevoir, Charizard... … The disaster in Bo City shows the steel torrent of mechanical beasts, slaying demons and sweeping away the Winged Wolf! In the crisis of the ancient capital, countless defense towers were erected, crossfire and firepower covered, and they successfully put on armor and took charge of the underworld. … Looking back, the magic plane, the dark plane, the summoning plane... Are all under my feet. Tang Yu: "Machine plus magic, the power is boundless! Even gods must be afraid!"