Winter school on p-adic Hodge theory was held during Jan. 12--16, 2015 at KIAS in Seoul, Korea. I'd like to thank all the participants for thier enthusiasm. (Jan. 19, 2015) East Asia Number Theory Conference 2014 was held during Jan. 20--24, 2014 at Fukuoka. I'd like to thank all the participants for their participation and enthusiasm. (Jan. 27, 2014) Symposium on ARITHMETIC GEOMETRY had been held during Oct. 19--21 at Fukuoka. I'd like to thank all the participants for coming. (Oct. 21, 2012) The workshop "Industrious Number Theory" had been held during Dec. 4-5, 2009. I would like to thank all the speakers and participants. The website is here.