Rude Cyclists?

Recently I have been traveling in Osaka and I was walking on a busy sidewalk with many people. A cyclist comes up behind me and starts yelling at me at the top of his lungs saying something I can only assume along the lines of “Get the fuck out of my way!”in Japanese. I was so flabbergasted because mind you I’m not the only person blocking his way. There are other people he has to weave through in front of me anyways. It seemed like he targeted me only and I could tell the other locals also looked in shock at his anger. Mind you we are walking along a road WITH A DEDICATED BIKE LANE. It just left a sour taste in my mouth because what could have prompted such a reaction. It almost made me want to push him off for being such an asshole. Has anyone else experienced something similar like this or was this guy just have a really really bad day