These verses could be naive, they stay frank and are expressing your feelings. Nothing to be ashamed for. (you know that only a few people can read mines, but that's not the topic ^^')

Don't say it's a farewell. I'm pretty sure it's not. Maybe you'll be back in Japan earlier than you thought. And I won't say anything more because Lyr said it in a very nice way.

@Lyr: it's a bit annoying to be able to write only when you're depressed T_T but I recognize that the most beautiful things are (too?) often sad...