Shigaraki is not dead in the manga. The storyline has many twists and turns, and his character plays a significant role, so his survival adds to the ongoing drama and suspense.
One common theme is the power dynamic. Fat Gum has a lot of strength and experience, while Fem Kirishima might be portrayed as more of a newbie or someone looking to learn from him. Their relationship can develop around training and growing stronger together.
A 'shigaraki x femkokkuri fanfic' might explore the relationship between the two characters. It could involve character development, their interactions in different scenarios. For example, it could show how they support each other during difficult times or how their personalities clash and then gradually find common ground. It might also introduce new plot elements based on the unique characteristics of Shigaraki and femkokkuri in the fanfic's universe.