My Mecha System in a Fantasy World

Carter was a regular employee at a software company, until one day when he was returning home, he got hit by truck-kun. He reincarnated as a baby into the Grayson noble family in the Sylvester Kingdom. This world has magic as it's foundation. [Ding! Congratulations to the host for successfully meeting the requirements to unlock the Mecha System] [Ding! Main mission released: Find an energy source of nuclear value within the time limit. Rewards: Full activation of system Failure: Host will die.] [Time remaining: 6 days 23 hours 59 min 59 sec]. [Ding! Congratulations to the host for summoning 'S-grade Mecha Solacis knight ruler'] [Ding! Congratulations to the host for obtaining '1 million energy points' from the energy crystal] [Ding! Congratulations to the host for obtaining 'All Elemental Supreme Body']. [Ding! Congratulations to the host for unlocking a new mecha series 'Shadow Rulers'] And there begins my conquest of the world using my legion of Mechas. Note: This is my first novel guys, and any complaints about plot holes or grammar mistakes, please tell me, I will correct it. And please add this book to your library, it will help me a lot. If you wish to support me then: paypal.me/ainz006 I don't have ownership of the above art cover. If you want to have discussions then join my discord server: https://discord.gg/n8nEzdd6