Kexue System Allows Me to Protect the Original Work

[System + no cp + neutral faction + plot party + strike and redemption + extremely unfriendly to the red side] Kimizuka Yuki is a long-time fan of Ming Ke and a fan of fandom. When she was seeking help from the literary shortage, she clicked on a sharing link. Unexpectedly, it was a phishing post from the system. The system cried out that Ming Ke had been pierced through a sieve and that the original world was in a mess and was in danger of collapse. As a true fan, Kimizuka Yuki accepted the system's request for help without hesitation. The beginning is eight years before Ke Yuan... Junzuka Snow: "System, isn't this timeline too far back?" System: "No way, this is a dense crossing point, turning the five-person police academy team into a six-person team, you know." Junzuka Snow: "Then what should I do? Stop everyone who wants to get involved?" System: "Yes, host, you are so smart!" Junzuka Snow: "Okay, I'll try my best." Ke Yuan seven years ago... Junzuka Snow: "System, what is the intensive point at this time?" System: "Isn't this obvious? Help Hagihara Kenji!" Kimizuka Yuki: "Isn't that right? I want to ensure that Kenji Hagihara dies according to the plot of the original work?" System: "Although it's cruel, that's how it is." Junzuka Yuki: "Woooo~ No problem, woo~ I can do it, woo~" … The first year of Ke Yuan... Kimizuka Yuki: "We finally came to the beginning of the story. It was so difficult." System: "This point is a bit dangerous." Yuki Kimizuka: "Is it more dangerous than stopping Bourbon from saving Scotland before?" System: "Yes, this point is the intensive point where the protagonist fails." Kimizuka Yuki: "This doesn't change the plot, right? What do I need to defend? I really haven't seen anyone successfully prevent Kudo Shinichi from getting smaller." System...