2019年４月14日。
京葉線南船橋駅*1。
船橋競馬場*2。
*1:See also https://sumita-m.hatenadiary.com/entry/20160228/1456655841 https://sumita-m.hatenadiary.com/entry/2019/07/01/111535
*2:See also https://sumita-m.hatenadiary.com/entry/20141210/1418147190 https://sumita-m.hatenadiary.com/entry/20160228/1456655841 https://sumita-m.hatenadiary.com/entry/20160323/1458664199 https://sumita-m.hatenadiary.com/entry/20160520/1463766901 https://sumita-m.hatenadiary.com/entry/20160805/1470366510 https://sumita-m.hatenadiary.com/entry/2019/07/01/111535