After two weeks being back in Czech and mostly offline, I got back to Japan this weekend. The travel went quite okay, the only thing I really don't understand is why Japanese customs always want to check my luggage. There must be something special on it or I probably look like drugs smuggler, but he did not answer my question why they always select me for checking things :-).
Anyway I already processed most of email backlog, only about 100 mails remain, I hope to read and reply them during this week.