This was stated as the main reason he was brought in to work on Monster × Dragon.[1] His writing method, which he has not seen in other works of fiction, is called "backwards scriptwriting".[2] He described it as starting with the ending first, then working backwards from there.[7] He then creates central plot points that form emotional peaks in the narrative, adds details, then scatters them through the narrative so the player can build a suitable emotional connection.[7] He uses a secondary method called "photo thinking" in conjunction with his scriptwriting method.[22] Yoko describes it as a method of visualizing and keeping in order events and emotional peaks throughout the story.[22] He cited his inspiration for this method as The Memory Palace of Matteo Ricci by Jonathan Spence.[22] He is keen in experimenting with the video game format, feeling that many conventions of the video game market inhibit developers' creative freedom.[7][4] Many of his games reflect his own feelings about death and his socratic questioning of the concept.[4] Yoko also considers food an important tool in creating a game, stating that he thinks that types of food from across the world can help him get a feel for the people the game is being aimed at.[23]