Santa Gunma – Thank you so much for your patience. Unfortunately, the Gunma list has turned out to be very small with just two confirmed locations (that I could find) where you can meet Santa in Gunma this season, making it the smallest list of all prefectures in the Kanto plain. There are quite a lot of Santa locations in neighbouring prefectures of Saitama and Tochigi, some which maybe commutable from your location. The Tokyo list with 36 Santa locations is here.
Places you can see and / or meet and greet Santa in Gunma this holiday season.
🎅Toys R Us Maebashi
Santa Gunma – Santa Claus will visit the Toys R Us in Maebashi on December 16th from 11. 30 am. He will be available for a meet and greet five different times during the day, each time for 30 minutes. You will find him walking around the store. The times are 11.30 am, 1 pm, 3 pm, 4 pm and 5 pm. This is a free event. Bring your own camera.
Official Maebashi specific event page: Toys R Us Maebashi Santa Information (Japanese only)
Official Event site: Toys R Us Santa Schedule (for the whole country)
Toys R Us Maebashi’s official site: Toys R Us Maebashi’s official store page
🎅Minakami Ski Resort
Santa Gunma – Minakami Ski Resort is opening for the season on December 20th. As part of their season opening events they will have a “catch Santa” event on both the 23rd and 24th between 1 and 3 pm. If you do catch Santa on the slopes you will get a present from him! For guests of the hotel they also have a Christmas plan that involves a visit from Santa*. *This Santa is a staff member dressed up as Santa.
Catch Santa Official event page: Catch Santa Event Page
Christmas plan official page: Minakami Ski Resort ASP Hotel Santa plan
For other Santa Claus Locations in the Kanto Plain:
https://insaitama.com/places-to-visit-santa-2017-chiba/