The art style might be a major factor. If it has a distinct visual aesthetic, different from the typical anime - like or realistic styles seen in many visual novels, it would set it apart. For example, if it has a more hand - drawn, sketchy look or a very moody color palette. Also, the way the letter is incorporated into the story could be something special. Maybe it's a key element that drives the plot in a way that's not been done before in other visual novels.
Perhaps its story. If it has a really engaging and original plot that stands out from the common themes in other visual novels, like a unique take on the supernatural with the 'ghost' aspect, it could be considered unique.
The combination of elements in 'the ghost the letter visual novel' could be what makes it unique. It could be the characters, for instance. If they are complex and well - developed in a way that's different from the usual character tropes in visual novels. The interaction between the ghost and the letter within the narrative structure might create a unique atmosphere and gameplay experience. For example, if the choices in the game are somehow related to the letter in a very creative way, that would distinguish it from other visual novels.
Chapter 205, "The Fairy Descends to the Mortal World", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. Early on, Ah Fu had no idea what the video Jiang Li mentioned was.. By the end, Having such a sister certainly would bring happiness..
Chapter 308, "Want me to surrender to him? Don't even think about it!", is the clearest early answer because it turns Aunt Ying's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Li sighed, "Where is your mind wandering?
Chapter 11, "She Smiled, He Panicked", is the clearest early answer because it turns Lin Manru's situation into a concrete plot event.
Chapter 92, "Why would a 19-year-old girl read this kind of book?!", is the clearest early answer because it turns Su Yinwan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Jiang Li, lightened from any task, had plucked a few leaves from the...
Chapter 97, "Can This Really Be Broadcast?", is the clearest early answer because it turns Sister Li's situation into a concrete plot event.
Chapter 261, "They've Ruined the Entertainment Industry!", is the clearest early answer because it turns Director Sun's situation into a concrete plot event. The chapter turns that into something concrete by moving from The village chief's eyes nearly popped out after he heard the whole...
Chapter 5, "Catching Adultery Personally", is the clearest early answer because it turns Manager Fang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Actually, when Manager Fang saw Jiang Li, he was somewhat surprised.
Chapter 512, "The Ultimate Rich Foolish Uncle", is the clearest early answer because it turns Youth Trainee's situation into a concrete plot event. The setup is An Jing would have been surprised if she could recognize him;
Chapter 139, "I Will Help You Chase Shang Shaojing!", is the clearest early answer because it turns President Shang's situation into a concrete plot event. The chapter turns that into something concrete by moving from Wen Jiaojiao's live stream was inundated with a wave of question...
Chapter 130, "Director Sun: He Got Schooled Again?", is the clearest early answer because it turns Uncle Zhao's situation into a concrete plot event.