４月21日。
マルエツ京成大久保店*1。習志野市大久保１丁目。
*1:See also https://sumita-m.hatenadiary.com/entry/20151123/1448290064 https://sumita-m.hatenadiary.com/entry/20160731/1469923327 https://sumita-m.hatenadiary.com/entry/20160814/1471186840 https://sumita-m.hatenadiary.com/entry/20160906/1473144723 https://sumita-m.hatenadiary.com/entry/20170319/1489888028 https://sumita-m.hatenadiary.com/entry/2019/08/17/100010 https://sumita-m.hatenadiary.com/entry/2019/08/19/212145 https://sumita-m.hatenadiary.com/entry/2020/01/14/101354 https://sumita-m.hatenadiary.com/entry/2020/01/16/084538 https://sumita-m.hatenadiary.com/entry/2020/05/07/130934 https://sumita-m.hatenadiary.com/entry/2020/05/26/084821 https://sumita-m.hatenadiary.com/entry/2020/10/15/220516