다음 중:Aizuki is usually an ordinary office lady working in Tokyo. However, even though she was an ordinary office worker, during the busy season, she had to work a lot of unpaid overtime, which made her mentally more tired than physically. So she plans to go mountain climbing alone, which is her only hobby. She thought it would be best to go somewhere for the first time if possible, so she used social media to gather information and decide on a mountain to climb. However, when you actually go there, even those with mountain climbing experience find it easy to get lost... Naturally, she and Aizuki also get lost, but she ends up at a mountain hut and escapes the trouble. However, the tragedy began from there... A servant with ulterior motives had been following her ever since she was about to enter the mountain. And then theres the deserted mountain hut... The servant begins preparations for the perfect crime restraint training that he has been thinking about for a long time...