BLAH1 in Kashiwa, February, 2015
BLAH2 in Itoh, November, 2015
BLAHmuc in Munich, September, 2016
BLAH3 in Tokyo, January 2017
BLAH4 in Kashiwa, January, 2018
BLAH5 in Kashiwa, February, 2019
BLAH6 in Tokyo, February, 2020
BLAH7 (online), February, 2021
