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Each replacement must be completed within 20 seconds, and the number of substitutions is not limited. The time for exchanging players is when someone fouls, fights for the ball, calls for a pause, etc. The referee may temporarily suspend the timing of the match. 　　原作小说由纸城境介撰写、たかやKi负责插画，2017年起于KADOKAWA小说投稿网站「KAKUYOMU」开始连载，2018年正式出版，曾获得「第三届KAKUYOMU网络小说大赛」恋爱喜剧部门大赏、「这本轻小说真厉害！2020」文库部门新作第3名等奖项。Golden Ball, UnlicensedJIT is a kind of "pull" management system with market demand as the core. The establishment of this concept can urge enterprises to act according to market laws and organize purchasing, transportation, distribution processing, distribution and other activities strictly according to customer needs. Therefore, according to the characteristics of JIT production mode, the requirements of JIT production mode on logistics are analyzed from the perspective of logistics function.The following are the effects: 讲述了一个20岁新生的大学生都会经历的不受约束的"人性"故事。