The filming was done at various mountains such as Mount Myoko in Niigata and the Kita Alps before the mountain climbing season ended this year. Kudo appeared at the event by dragging her right leg where she then revealed that her leg got injured during the filming on the mountains. As there was a scene shot on 15 October where she had to drink a lot of water at one go, she felt like going to the toilet after the filming and slipped while going down the mountain in a hurry. As a result, she suffered a serious sprain in her right ankle which is expected to take two weeks to recover. Looking back, Kudo said that she would have preferred wetting her pants than to suffer this injury which led Hagiwara to remind her that the mountains pose a degree of danger to those who aren't careful.
In order to proceed with the rest of the filming, Kudo had to rely on ice packs to apply on her leg and appeared without her crutches for the phototaking session. Despite the injury, Kudo who is an avid mountain climber and is the navigator for NHK's "Jissen! Nippon Hyakumeisan", said that she might become the owner of a mountain cottage by the time she is more than 60 years old. If there is a day when she can no longer make a living in showbiz, she will go and become a mountain guide since this is something she enjoys doing.
Due to the filming being done outdoors, it was largely dependent on weather conditions so the cast and crew had huge difficulties moving around and finding accomodation. However, this also meant that their teamwork was largely boosted due to the tough conditions. Kudo even took photos of their production process with her iPhone and uploaded them to Facebook since she thought that it would be a pity not to share these interesting moments.
Sources: Yomiuri Hochi / Oricon / Eiga.com