Originally posted March 21, 2017 with the following commentary:
Ohhh boy! Time for a new flashback! And one actually told by the adults themselves!
[SFX: gulllp!]
Miko: Ahh, these always take me back, though... The days of endless youth...
Mirai: ?
Nozomi: Better make sure you're all set, Mirai-chan. These get...long.
Miko:Well, then! As you know, Sachiko and I have been together for a very long time... So it's really no surprise that this starts out with both of us out on a little shopping trip...