Board Thread:Questions and Answers/@comment-32771002-20170220143603/@comment-27452648-20170220154114

He started the Killing game so Mitarai could notice that there a killing game in the FF HQ and could use his hope video in order of hope, that's why Tengan was surprised to see Mitarai because he wasn't invited to the FF HQ and also that's why Mitarais NG code is using his talent, because the game could have ended very soon