2020年９月６日。
品川駅*1。
*1:See also https://sumita-m.hatenadiary.com/entry/20060914/1158219171 https://sumita-m.hatenadiary.com/entry/20070516/1179339586 https://sumita-m.hatenadiary.com/entry/20120531/1338471362 https://sumita-m.hatenadiary.com/entry/20130913/1379039171 https://sumita-m.hatenadiary.com/entry/20140104/1388829053 https://sumita-m.hatenadiary.com/entry/20160809/1470758851 https://sumita-m.hatenadiary.com/entry/20180629/1530242801 https://sumita-m.hatenadiary.com/entry/20180926/1537927881 https://sumita-m.hatenadiary.com/entry/2019/08/30/103919 https://sumita-m.hatenadiary.com/entry/2020/04/09/015235 https://sumita-m.hatenadiary.com/entry/2021/04/10/144118 https://sumita-m.hatenadiary.com/entry/2021/07/07/003928
