I assume the next chapter is him saying this is too much gold. Then they will go on about how building trust in business and politics is important. The king will go on about how it was a test and now they are best friends or something.
I know it's a Japanese thing, but he needs to stop humbling himself so much.
He's there as a diplomat, he can't be bowing and scraping. It places him, and thus the demon king whom he represents, below whoever he's debasing himself too.
I know humility is considered the ultimate virtue in Japan, but sometimes you need to show some guts, and confidence in your own position.
@BlackHoleEyes
Well, a japanese behaving like a japanese is at least better than those series not set on Japan but where people behave as if they were japanese.
@Flyingpantsu It's certainly an effective power. Even someone who just wants to live a simple life somewhere probably still needs at least some money as start up funds to do it comfortably.