Despair Girls is indeed relevant. It provides additional background and context to the main Danganronpa narrative, offering new perspectives and plot developments.
The '12th fail' likely refers to failing in the 12th grade examinations. In the context of it being a real story, it could signify the struggle, setbacks, and the journey of someone who faced failure at this crucial educational stage. It might also be about how they overcame this failure and what lessons can be learned from it.
Well, ultra short fiction is like a snapshot of a story. It condenses a plot, characters, and emotions into a tiny space. It's all about making a big impact with very little text.