Experience the Stunning Collaboration of The IDOLM@STER and Achi Village's Night Sky Adventure

A Marvelous Starry Night Awaits in Achi Village

Achi Village, located in Nagano Prefecture, is renowned for having Japan's most beautiful night sky. The Achi Hirugami Tourism Bureau, led by President Yuji Shirase, is excited to announce a special collaboration between The IDOLM@STER: Cinderella Girls and the Star Village ACHI from December 20, 2025, to February 28, 2026, taking place at the Fujimidai Kogen Ropeway Heaven Sonohara. This partnership has been designed to enhance regional tourism and community activation, and it coincides with the ongoing series celebration of The IDOLM@STER.

Since its recognition in 2006, Achi Village has consistently ranked as the number one location in Japan for stargazing, according to the Ministry of the Environment's nationwide star observation survey. The village has developed numerous initiatives that revolve around the shimmering night sky, including the Sky Paradise Night Tour, the Cloud Sea Harbor, and the development of unique spaces for stargazing such as the “Japan’s Best Starry Sky” Nagai Park. The community has also crafted original merchandise and even created a star marriage registration service and star license plates for visitors.

A Special Collaboration

During this festive period, fans can look forward to numerous exciting activities. Notably, attendees will find a special photo opportunity featuring Anastasia from The IDOLM@STER series, located inside the NorthBase building at the night tour venue. The photo spot is available only during the hours of the Sky Paradise Night Tour.

Moreover, exclusive collaborative merchandise will be on sale at the STAR SHOP located at the base of the mountain. Fans can purchase limited-edition items like the original clear files, badges, stickers, and acrylic stands, providing perfect souvenirs to remember their experience. Plus, visitors will receive an original postcard as a complimentary gift while supplies last, redeemable at the reception desk inside the NorthBase building during the event's operational hours.

Event Details

- Event Duration: December 20, 2025 – February 28, 2026
- Event Hours: 6:00 PM - 7:30 PM (Gondola operating hours), 8:30 PM (program ends, lights on)
- Location: Fujimidai Kogen Ropeway Heaven Sonohara, 3731-4 Chisato, Achi Village, Nagano Prefecture, 395-0304
- Contact: 0265-44-2311

Merchandise Pricing

- Original Clear File: ¥450 (tax included)
- Original Badge: ¥380 (tax included)
- Original Sticker: ¥400 (tax included)
- Original Acrylic Stand: ¥1,200 (tax included)

About The IDOLM@STER: Cinderella Girls

The IDOLM@STER: Cinderella Girls is part of the renowned IDOLM@STER series that began in 2011, blossoming into a multimedia franchise including rhythm games, live performances, comics, and anime, setting to celebrate its 15th anniversary in 2026. The series proudly features over 190 unique idols and boasts more than 300 original songs. The girls continue to strive towards their dream of becoming top idols, waiting for the 'magic' from their producers.

For further details, explore the official links:

Enjoy the Sky Paradise Night Tour

The Sky Paradise Night Tour offers a sublime experience where participants enjoy a 2,500-meter gondola ride that takes approximately 15 minutes, ascending to an altitude of 1,400 meters. As you journey through the darkness away from city lights, you'll be rewarded with an astonishing view of the starry sky—a perfect setting augmented by engaging commentary and dazzling light and visual displays themed around the night sky.
The winter season for this tour will run from December 21, 2024, to March 30, 2025, with admission prices set at ¥2,400 for adults and high school students, ¥1,200 for elementary and junior high school students, and free entry for preschool-aged children. For more information on the Sky Paradise experience, visit Sky Paradise Official Website.

Experience Achi Village

Nestled at the southern tip of Nagano Prefecture, Achi Village offers a tranquil retreat known for attractions such as the Hirugami Onsen and Hanamomo no Sato. Established in 1973, the Hirugami Onsen features soothing alkaline sulfuric waters famed for promoting beautiful skin, often referred to as