It looks like Yahoo’s rivalry with Google just got a little more heated thanks to Yahoo Japan launching a browser of their own on Google’s Android platform. Yup, it seems that the company (a collaboration between Japan’s Softbank and Yahoo) have created a custom browser app designed for the Japanese market in mind, possibly in the hopes that it will continue to give Google a run for its money at least as far as the Japanese market is concerned. The design of the browser itself while nothing to shout about appears to have taken some design cues from Opera Mini and Opera Mobile, which we guess given that both browsers are pretty decent, it’s not a bad thing. Interestingly Yahoo Japan has also included a “speed dial” that provides users quick access via their thumb to some of the company’s other services. Will Yahoo Japan’s browser “steal” some of the ad revenue from Google? That’s hard to say but at least Android users in Japan have yet another browser option to choose from. If you’re interested the browser can be downloaded here. [Press release (in Japanese)]