I'm not entirely sure what this specific phrase means as it seems rather unusual. 'Shinju' could be a name or a specific term in a certain context. 'Root squeezing' is a very strange and perhaps metaphorical or made - up concept here. And 'sakura fanfiction' likely refers to fan - created fictional stories related to sakura (cherry blossoms).
The phrase 'shinju root squeezing sakura fanfiction' is quite a mystery. 'Shinju' could potentially be a proper name. 'Root squeezing' seems like an action that is specific to the story or concept in this fanfiction. Regarding 'sakura fanfiction', sakura is often used in various forms of media, especially in anime and manga - inspired fanfiction. It could be that this fanfiction combines an unknown element 'shinju' and the strange action 'root squeezing' within the context of sakura - themed fan - made stories.
Well, 'shinju' might be a unique element in a fictional universe, perhaps a character, object or place. 'Root squeezing' is really hard to define without more context, it could be some sort of action or situation in the fanfiction world. 'Sakura fanfiction' is straightforward, it's about fan - made stories that involve sakura, which are very popular in Japanese - inspired fictional works.