I would like to stay in Japan for 2-3 months. But is that possible? Because if I am staying in my friend's house the visa would be troublesome. (It requires my friend's passport which is confidential.) My friend wouldn't willing to give me a copy of it.

Thus, I am thinking that if I get a hotel confirmation and apply. After I got the visa, I cancel the hotel room. The hotel doesn't need any deposit for reservation so I can stay at my friend's house. Is that fine? Or the embassy will track my itinerary?

PS: I've entered Japan twice, but with my old passport.