Kaze Ha Yama Kara Fuiteiru Why Climb Mountains with Me?

[Machine Translation] The main character, Gaku, made a name for himself in the sport climbing club in high school. For some reason, he had made up his mind not to continue the sport in college. One day, however, he is caught up with Azusagawa Hotaka, the head of the climbing club, who is rumored to be his girlfriend, and they climb mountains together several times, when he receives a call on his phone from his high school coach, Takarada Kensuke. A silent phone call from his benefactor, which he received while climbing the mountain. After that, he was informed of his benefactor's death by slipping and falling. This is a mountain mystery by Mio Nukaga.

高校時代にスポーツクライミング部で名を馳せた主人公・岳。訳あって大学では競技を続けないと心に決めていた。しかし、恋人と噂される登山部部長の梓川穂高につかまり、幾度か一緒に山を登ったある日、岳のスマホに高校時代のコーチ宝田謙介からの着信があったのだが―。登山の最中に受けた、恩人からの無言電話。その後、知らされた恩人の滑落死。額賀澪がおくる山岳ミステリ。