In the whole volume 1, there's just 2 mecha battle scenes, at the beginning and the end. The rest are daily life and getting deeper with the characters.
But as the spoiler below said, this one is better seen as a dime novel. It's just the usual deal, not something deep or complex.
Author: "So I have this idea."
Publisher: "Alright, I'll need to hear the title and get a short summary right now. Get me a draft in 3 days ."
Author:"Slave-"
Publisher: "Your manga starts tomorrow."
ok a demon god that looks like a kid with 8th grade syndrome something went wrong
or surprise the girl is the demon god would be nice cause it would be something new but the dude is gonna be the demon god so kinda 0815
ok that dude is really a kid with 8th grade syndrome first the butler just told him clean ur room
already 2 things wrong with that since he is the demon GOD
and another thing I dont like authors like too call things gods that can die so its not a god wtf
they really like to do that in Material arts "god realm" or they like being called god but fo to the next world where they do the same shit again u dont feel much of a difference
The "God" thing is like propaganda stuff.
His family had been doing the job for generations for their country, and they intentionally makes themselves bigger than life so their name alone already gives big enough impact.