Long time no seen ! These days I've been studying statistical mechanics, and joined a seminar about it which I'm carrying out with the graduate student of Waseda University. He is majoring in nano science, and conducting an experimental research of superconductor, while studying a quantum field theory, particle theory, and so on, in order to go into particle theory in PhD (wow !). By the way, the semester began. This semester, I'm taking a class of statistical mechanics, solid state physics, group theory and representation theory, mathematical physics, quantum chemistry, artificial intelligence, and English of science, side by side with seminar of general relativity, marketing, and as I mentioned earlier, statistical mechanics. Today I have to answer to the questionnaire, and finish reading the fourth chapter of "Statistical Mechanics 1" before getting in to bed. So see you next time.