Board Thread:Naruto Gaiden/@comment-25380140-20150514070725/@comment-2120712-20150518120738

If Itachi's history of the Uchiha is to be believed then they had a history of going after the MS/EMS powers. Also maybe Shisui's ancestor Kagami had it. Would not be surprised if MS techs depends on your specific uchiha blood line connection. Another problem is that we were never shown or told what were Madara's or Izuna's MS techs beyond Susan-no.