2019年12月３日。
習志野市藤崎１丁目*1。
藤崎７丁目*2。
*1:See also https://sumita-m.hatenadiary.com/entry/20130413/1365875653 https://sumita-m.hatenadiary.com/entry/2019/10/28/100855 https://sumita-m.hatenadiary.com/entry/2019/12/24/023148
*2:See also https://sumita-m.hatenadiary.com/entry/2019/11/21/163607 https://sumita-m.hatenadiary.com/entry/2020/01/01/123253 https://sumita-m.hatenadiary.com/entry/2020/01/04/162334 https://sumita-m.hatenadiary.com/entry/2020/01/06/092155 https://sumita-m.hatenadiary.com/entry/2020/01/14/094848
