2019年６月７日。
千代田線新御茶ノ水駅*1。
博多天神御茶ノ水１号店*2。千代田区神田駿河台２丁目。
JR御茶ノ水駅*3。
*1:See also https://sumita-m.hatenadiary.com/entry/20161130/1480485070 https://sumita-m.hatenadiary.com/entry/2020/02/16/111831 https://sumita-m.hatenadiary.com/entry/2020/03/08/002025 https://sumita-m.hatenadiary.com/entry/2020/03/11/233303
*2:See also https://sumita-m.hatenadiary.com/entry/2020/03/20/085402
*3:See also https://sumita-m.hatenadiary.com/entry/20070329/1175189030 https://sumita-m.hatenadiary.com/entry/20090912/1252725447 https://sumita-m.hatenadiary.com/entry/20160920/1474377059 https://sumita-m.hatenadiary.com/entry/20170314/1489466004 https://sumita-m.hatenadiary.com/entry/20170318/1489814835 https://sumita-m.hatenadiary.com/entry/2020/02/16/111831 https://sumita-m.hatenadiary.com/entry/2020/03/11/233303 https://sumita-m.hatenadiary.com/entry/2020/03/20/085402