The hotel elevator scene during their very first outing. In a purely religious capacity, of course. Small talk follows, culminating in some observations about the way the suit tends to ride up, since it's assumed he's just a guy in a Spider-Man costume. Zamasu, when the latter was going to kill Gowasu. True, InuYasha is short-tempered, violent, and overall a bit of a prick, but there are plenty of lines that even he refuses to cross: The Hawaii Five-0 has an example when a couple of tourists with a little boy find themselves in the same elevator as the Five-0 police officers, fully geared in bulletproof vests and guns out, as they are pursuing a wounded suspect hiJimmding in a grand hotel.