Codenamed "Precision", she is the number one shooter in the industry, and is also a serious social phobia + hardcore otaku. For her, sniping targets is "work" and going home and playing games is "life". However, just when she finished an order and was about to go home, she was hit by a truck. Reincarnated into another world's weakest monster - slime. No hands or feet, no computer, no takeout... But! Here is a perfect cave that is dark, quiet, and secluded from the world! [God-level "house" home system] activated! "Ding! It is detected that the host desperately desires to be alone, and the mission is released: [Build an absolutely safe door]!" "Ding! Swallow [Wind Wolf], get the skill [Stealth], the gospel of social terror, and become invisible with one click!" "Ding! Swallow the [Lava Dragon], get the skill [Dragon Power], clear the place with one click, leave no one alone!" ... Brave: "Devil! You little turtle, come out!" Demon King: "You are the turtle! Your whole family is a turtle! Don't bother me! Can you afford to pay for the hot springs I just dug?!" This is the story of a socially fearful house girl who, in order to stay at home comfortably, accidentally turned herself into a house girl.