Japan is made up of many islands, but there are four main islands. The largest one is called Honshu. Tokyo, Osaka, Kyoto, Kobe.... are all on Honshu. I'm on Honshu right now. Kushimoto city in Wakayama pref. Is the most southern point in Honshu. Of course there's an omiyage shop there too.
This is what the coast looks like. I thought it kind of looks like Laguna Beach.
Here's a map.