Val wrote:

Those blossoms look like witch hazel to me also. I also seem to remember
reading about a pink or red witch hazel somewhere, only it's not actually a
Hamamelis, the flower just very much resembles this. Don't have time to
power Google now, maybe later if somebody doesn't give it a shot first.

Val

Hamamelis X intermedia 'Diane'

Is it winter in Japan now?