Aitsuki is an ordinary office worker who usually works in Tokyo. However, even though I was an ordinary office worker, I was exhausted mentally more than physically due to continuous unpaid overtime during the busy season. So she plans to go on her one and only hobby, mountaineering. If possible, she thought that the first place would be good, so she used SNS to gather information and decided on a mountain to climb. However, when you actually go there, it is easy to get lost even for experienced mountain climbers. Naturally, she gets lost with Aitsuki, but she arrives at a certain mountain villa and escapes danger. But the tragedy started from there... A manservant with ulterior motives followed her all the way from the moment she entered the mountain. And an unpopular mountain lodge... The manservant begins preparations for the perfect criminal restraint training that he has been warming up for a long time...
