The protagonist, who is looking for an apartment, accidentally opens a door to another world. There, he finds himself trapped in a huge, desolate building. It is a hellish place ruled by a certain monster, where neither going out nor dying is allowed!
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The protagonist, who is looking for an apartment, accidentally opens a door to another world. There, he finds himself trapped in a huge, desolate building. It is a hellish place ruled by a certain monster, where neither going out nor dying is allowed!
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