Yeah, I'm really hoping that the two tragedies he was talking about were his parents deaths and Yahiko's death and not his parents and that stupid dog.
Those chuunin ninjas were Hidden Rain ninjas. So it makes sense that one of the Hidden Rain ninja would look like them. Hell, even Hanzo wears their trademark rebreather(which they finally explained why they wear them, apparently there's a lot of poison mist in the Rain).