I've been following this game for years, but I've never played the Ouendan inspired mode. Instead, I've only played for this:
If you're into taiko, it's a decent online version that has a never ending supply of maps since every osu! map can be turned into a taiko map (though very few survive the transition). Alternatively, the most popular maps will usually have a dedicated authentic taiko difficulty. Further, the community continuously keeps up with the arcade/home releases and recreates authentic taiko maps for osu! In short, this is the easiest way to keep up with the games if you don't speak Japanese or live in an Asian country.
Just a PSA if someone was interested in the other, lesser known aspects of osu!
If you're into taiko, it's a decent online version that has a never ending supply of maps since every osu! map can be turned into a taiko map (though very few survive the transition). Alternatively, the most popular maps will usually have a dedicated authentic taiko difficulty. Further, the community continuously keeps up with the arcade/home releases and recreates authentic taiko maps for osu! In short, this is the easiest way to keep up with the games if you don't speak Japanese or live in an Asian country.
Just a PSA if someone was interested in the other, lesser known aspects of osu!