The ghost from the Touhou series, Yuyuko Saigyouji, plays a minor role in the book series Diary of a Wimpy Kid: The Abridged Series.
Diary of a Wimpy Kid: The Abridged Series Edit
Diary of a Wimpy Kid: Rodrick Sucks Edit
Yuyuko sends false advice and aids Greg to commit crimes to try to get Greg in deep trouble. Every time, it ends in Greg's favor, as the things she tried to get him to do helped him move on.
Diary of a Wimpy Kid: F*** my Life Edit
As she failed to get Greg into trouble in the first book, Yuyuko plans to have a meeting with Greg, but as her timid nature took over, she instead scared him. Greg gets his father to investigate, and Greg gave his dad a shotgun and a grenade. Yuyuko evades all these attempted attacks and mortally wounds Greg's dad. Yuyuko then plans to take revenge on Greg as he had tried to harm her.
Diary of a Wimpy Kid: The Ugly False Edit
Not much is known about the plot, but it is known that Yuyuko will try to reason with Greg during a strange event. Greg denies and Yuyuko invokes death on him, thus ending the series (and Greg's life.)