My Mecha System in a Fantasy World MMSFW

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