Here is his answer to the question : "When will you release the Mailbomb hack ?"
> there is never a release date set for any homebrew. i cant go into any more details about it.
@Xdqwerty, Osu! Tatakae! Ouendan! is the Japanese version of the game, different settings/characters/songs but otherwise identical mechanics. I played that before I knew about Elite Beat Agents lol. Both fantastic games https://en.wikipedia.org/wiki/Osu!_Tatakae!_Ouendan