"Oh, this is the Demon Takuma, the one that can raze cities and kill entire armies... He's calm and passive right now, so let's piss him off by poking him with a stick!"
I really want this trope to die... It's dumb, pointless and boring.
It would be fun if this author decided to play with the trope, making Takuma incredibly mad and actually become a Demon, kill half the city and level it... but that will never happen.
After all, this manga is like the paint-by-number of the Isekai genre.