Some time later, after the founding of MBI, Kamikura Island was turned somehow by Hiroto Minaka into private land, removed from the maps and it became an extraterritoriality. Now the authorities of the world reacted and started the invasion of Kamikura Island of which the first attack wave was the strongest and most aggressive. The newly formed Disciplinary Squad's first generation was able to withstand all three attack waves of the attacking international army and was able to protect the still sleeping 103 Sekirei. All Sekirei were raised, adjusted and grew up on this island before they were released in the outside world to find their Ashikabi.
The final known attack takes place during the final stage of festival of the sekirei plan after Ashikabi Mikogami Hayato and Sekirei Mutsu 'break' the ship contained within to escape Akitsu's norito in effect causing Minaka Hiroto to loose contact with MBI.