Nerawareta joGakkou Serafuku to Mokushiroku (Kadokawa Bunko)

[Machine Translation] Trapped in a world! When Kyoko Shimazu wakes up alone, she finds herself in a different world made of an "infinite staircase" that loops forever. At the same time, her classmates Mizuki and Mari are also trapped in the infinite staircase. What are the three escape methods that each of them has come up with based on their own detective skills and personalities? Including the title story, four demonic incidents occurred at "St. Arisugawa Girls' School," a boarding school for detectives. This is a collection of short stories depicting the activities of a girl detective in a mission school and a Catholic church.

閉じ込められた!島津今日子がひとり目覚めると、そこは永遠にループする「無限階段」でできた異世界だった。同時に、同級生のみづきと茉莉衣もまた、無限階段にとらえられていて...3人がそれぞれの探偵術と個性から導き出した、3種類の脱出方法とは?表題作を含む、全寮制探偵養成学校「聖アリスガワ女学校」で起きた4つの悪魔的事件。ミッション・スクールとカトリック教会を舞台に、少女探偵の活躍を描く珠玉の短編集。