Yugami reminds me of me a little bit - he's trying to act fairly, but his internal code of ethics is a bit skewed to general societal consensus (he's an anarcho-capitalist in a social democratic society), so his courtesy becomes insult. However, he's so stubborn he can't adjust, which is a bit tragic.
But that's the problem. Outside Japan, that's just a faux pas that is generally overlooked. INSIDE Japan... that's an unwritten law you're breaking.
The best description I've seen is from a Japanese ex-pat living in America: "Rules are used as excuses."
I have no idea how they'll redeem Yugami's personality to make him likeable (it's obvious they'll try to do that), but right now I would definitely give up on talking to him
Man it hurts to see this, I was the kind of person that didn't know when to close their mouth, too. The only difference is I regret being so annoying to my peers.
Wow, the mangaka did such a good job with Yugami. There are tons of manga characters who everyone says operate on a different wavelength but really just have one or two quirks or are straight-up aliens. Everything this guy does from his words to his expressions just feels slightly off.
Fun facts: 湯神 yugami means hot water god, and 日の丸 hinomaru bento means rising sun bento (because it looks like the Japanese flag). Yugami can also be written as 歪み, which means distorted. The word play is top notch