We did nothing special for a new year's day. We just chatted and ate, which was a really fun time. Later, Dad and Mon told me on the phone that they really appreciated our short visit.
This kind of short stay used to be our routine, at least once a month, but it is becoming less common as they (not only my parents, but also my children) get older. I know that life is like that, but I hope that we can have a moment like this as often as possible.
PS. On the way to Hikone, I got a Gyarados, a doragon-type monster in Pokemon Go on the first day of the Year of the Dragon in the Chinese zodiac.