2021年8月10日。
世田谷区喜多見4丁目*1。
*1:See also https://sumita-m.hatenadiary.com/entry/2020/01/22/090212 https://sumita-m.hatenadiary.com/entry/2020/07/22/130407 https://sumita-m.hatenadiary.com/entry/2021/01/05/030904 https://sumita-m.hatenadiary.com/entry/2021/04/13/093225 https://sumita-m.hatenadiary.com/entry/2022/01/04/103152 https://sumita-m.hatenadiary.com/entry/2022/02/11/090218 https://sumita-m.hatenadiary.com/entry/2022/07/10/084708 https://sumita-m.hatenadiary.com/entry/2022/08/17/112139 https://sumita-m.hatenadiary.com/entry/2023/01/10/151928 https://sumita-m.hatenadiary.com/entry/2023/08/14/164116