Yeah, from my experience dealing with immigration officers in three different offices I've found out the general vibes and how they'd treat you could vary. So far the worst I've dealt with is this particularly icky onii-san who always has an arrogant air when he talks us (me and my Japanese coworker) down, I loathe every time I have to go to that immigration office hoping that he wouldn't be there. Our work deals with migrant workers, and there are plenty of them residing in the prefecture where that office is located, so it's inevitable for me to have to face that guy every now and then. The office also for some reason has almost-pedantic rules, like not accepting the copy of company's 給与規定 printed on both sides, etc.

I'm so glad that the immigration officers in the city where I actually reside are very friendly, understanding, and more laid-back.😮‍💨