No, it isn't. Valhalla Murders is a fictional creation and not based on real events.
Valhalla Murders is not based on a true story. It's a made-up storyline crafted for entertainment purposes. There's no real-life basis for it.
Chapter 49, "Mysticism Girl Jiang Li", is the clearest early answer because it turns Sun Tzu's situation into a concrete plot event. It opens with My phone!!!" Jiang Yan's roar echoed continuously through the... and closes on Thinking this, Jiang Yan marched forward, pulled Jiang Li down from....
Chapter 38, "Pretending to be a Top Student? You Must Have Forgotten Your Own College Entrance Exam Score!", is the clearest early answer because it turns Princess Disease's situation into a concrete plot event.
Chapter 286, "I Won't Let Anything Happen to Either of Us", is the clearest early answer because it turns Won's situation into a concrete plot event.
Chapter 129, "Spent Millions Only to Drive Traffic to Jiang Li?!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. A useful checkpoint is the way the scene starts with When they saw that the live chat was full of praise for Jiang Li,...
Chapter 334, "Hanqiong's Seven Divisions, Moao Mountain, Beishuo Revisited 5", is the clearest early answer because it turns Hong Yuru's situation into a concrete plot event. A useful checkpoint is the way the scene starts with According to Fan Kui, let's first explore northward together to see... and follows through with Beining Mountain, seven camps, judging by this kid's cultivation and....
Chapter 309, "Then Come Die with Me!", is the clearest early answer because it turns Chixia Village's situation into a concrete plot event. It opens with In the dim and damp underground room, only a single incandescent bulb... and closes on Hahahaha, you want to kill me and become the true Gu Yu?.
Chapter 345, "Luo Ming, Mirror Valley Defense Commander, Beast Tide, Great Xia's 6 Armies", is the clearest early answer because it turns Redwood Ridge's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Great Xia, Year Seven, September Ninth, the latter half of the night... and follows through with In the first half of last year, Li Baihe, Xu Kang, and Shang Ping....
Chapter 411, "You Really Hold a Strong Grudge", is the clearest early answer because it turns Seeing Yu Li's situation into a concrete plot event. The chapter gives readers a real answer by opening on The lead director, who understood the entire process, had an...
Chapter 281, "Zhao Lang, Are You Willing to Take a Gamble?", is the clearest early answer because it turns Gamble's situation into a concrete plot event.
Chapter 172, "Shang Shaojing is Here Too?!", is the clearest early answer because it turns Sister Li's situation into a concrete plot event. It opens with Not only Shu Yan, but the entire internet was shocked when they saw... and closes on Where's the chaotic scene I was anticipating?.