A gift for a wonder creator! Just_an_Awkward_Person on AO3. They have a great series that crosses over Assassination Classroom and Fran Bow. It’s called “Pull the fire alarm (I never meant any harm)”
The main story, “I guess you could say (we’re all a bit mad anyway),” is Karma-centric, with Karma taking Fran-Bow’s place. Of course, it has all the warnings Fran Bow has, so take caution.