This game is pretty special. Thanks for bringing it up.

As others have said, there isn't enough detail to get a handle on the gameplay. What perspective do you imagine it having? What would be on screen? What buttons do things, ie. how do you interact with the world?

@tincow: Grinding is when the game mechanics require you to do something un-fun lots to achieve something else that, for whatever reason, the game's made desirable. Killing marines in an FPS can be a grind... but only if it's got boring, but you really want to hit level 55 in CoD4 for the achievement to show off to…

Making fun of the elderly is awesome.

The cool thing about this is that it tells everyone nearby there's a pervert around, and to start paying attention, and you stay largely anonymous. That's a pretty clever way of dealing with the situation without calling attention to yourself, which I understand Japanese society generally considers improper behaviour.