Yamabudoudanshi
Shohin
Here is a picture of that same tree taken in 2003, long before I owned it:
View attachment 297107
It had that yellow coloring in it’s needles even back then.
I'm certainly no expert, but it looks a bit like the 'Nasu' white pine. Most of the ones I've seen are from Tochigi prefecture, including the small one I own.
The one on the left of this photo is a Nasu, it has the small/yellowish needles you spoke of, as does my little guy.
I could be way off but the foliage looks similar to me.