We love the kind of hyperenthusiastic trailers that Japanese game companies produce. When such a chipper announcer tells us how awesome a game is, we're inclined to believe them. And we have no reason to believe that Meccha! Taiko no Tatsujin DS: 7-tsu no Shima no Daibouken is anything but great, between the tried-and-true fake-drumming gameplay and the endless march of beloved characters.
But even if we didn't care about the game, or didn't even know what the hell it was, the super-adorable moment at the end of the trailer when the boy, dejected after a loss, raises a drumstick stylus and sleepily asks for another game would have sold us as our hearts were melting.