Mikan and the other ultimate students have been put in a sort of sleeping chamber, And transferred their consciousness in a virtual reality called "Jabberwock Island" Mikan and everyone else used to be an remnant of despair, Serving junko enoshima and helping her destroy the world and spread despair. Mikan, The ultimate nurse secretly remembered what happened before they were all sent into this virtual reality, Via the new motive "Despair-Disease" She has the "remembrance disease."