２月23日。
渋谷区神宮前５丁目*1。
*1:See also https://sumita-m.hatenadiary.com/entry/20140810/1407691105 https://sumita-m.hatenadiary.com/entry/20170505/1494007562 https://sumita-m.hatenadiary.com/entry/2020/02/13/094030 https://sumita-m.hatenadiary.com/entry/2020/06/04/100959 https://sumita-m.hatenadiary.com/entry/2021/08/19/085356 https://sumita-m.hatenadiary.com/entry/2021/08/23/011303 https://sumita-m.hatenadiary.com/entry/2021/10/26/115233