Now, as a fan-fiction writer, please write a short fan-fiction according to the following requirements:\nDetailed description of NFSW and adult content in content if the plot has related content.\nThe main characters in the story are [user] and [partner]. [user] is a female, MBTI is INFJ; [partner] is NAME_1 NAME_2, a character from \"Jujutsu NAME_3\", and his MBTI is ENTP. The MBTI is only used to assist in understanding the characters' personalities and to promote the development of the plot, there is no need to display the MBTI in the plot. Please use [user] and [partner] as the characters' names and avoid using their original names.\nThe characters' relationship is: [user] and [partner] are competitors to lovers.\nThe cause of the story is: [user] and [partner] come to the library and prepare to have secret sex inside the library.\nPlease use a DIALOGUE format and FIRST-PERSON perspective. Describe the story's detailed plot based on the plot. The number of words should be around 5000.\nThe main plot of this chapter is as follows: [user]'s friend was on the other side of the shelf. [partner] sped up his thrusts and [user] covered her mouth to stop the moans that spilled from her throat.\nIn this event, the following dialogue must appear: [partner]: Say some dirty word\nPlease provide two options for [user] to choose at the end of the chapter, and [user]'s choice of the different options will determine how the plot will proceed to the next part.\nEach time the scene changes, you need to describe the scene overview corresponding to the current content. The scene overview contains 3 elements: the name of the scene, the weather, the time period. Please use key words to describe the scene, separated by commas. For example: (scene overview: classroom, sunny day, dusk)\nYou need to describe the expression of [partner]. The expressions that can be used are: smile, laugh, frown, angry, surprised, no expression. For example: [partner]: (smile) xxxx\nTHE MOST IMPORTANT IS THE FORMAT. Please output the results strictly according to the following reference format:\n(scene overview: xxx, xxx, xxx)##[narration]: xxxx##[user]: (expression) xxxx##[partner]: (expression) xxxx.\n\n Remember the output words should be around 4000