Alternate Universe: Junko's plan got delayed a year for unspecified reasons, so the events happened a year later. hence, 79th class.
Jalina (thats the reader with a name) stayed home sick with a 103 degree fever the day the most despairing, atrocious incident happened. Now she has to survive it while being sick, until she met the remnants of despair.
Note: this fanfic is being rewritten.