Below are the ski resorts I have visited here in Japan

Hokkaido

Kiroro Snow World
Rusutsu Resort
Furano Prince Resort
Niseko United
Tomamu

Nagano

Madarao Kogen
Tangram Ski Circus
Nozawa Onsen
Shiga Kogen
Hakuba Norikura

Niigata

Myoko Ikenotaira
Myoko Akakakura
Naeba Prince
Kagura
Joetsu Kokusai
Gala Yuzawa

Gunma

Kawaba

Fukushima

Inawashiro Snow Paradise

Iwate

Shizukuishi Prince