2022年７月28日。
葛西臨海公園*1。江戸川区臨海町６丁目。
*1:See also https://sumita-m.hatenadiary.com/entry/20131004/1380911282 https://sumita-m.hatenadiary.com/entry/2019/01/14/111042 https://sumita-m.hatenadiary.com/entry/2020/04/27/142854 https://sumita-m.hatenadiary.com/entry/2020/05/23/090836 https://sumita-m.hatenadiary.com/entry/2022/06/10/112758 https://sumita-m.hatenadiary.com/entry/2023/11/06/220820
