Board Thread:Questions and Answers/@comment-17259909-20180703180139/@comment-5780397-20180710121227

I should also add that any decent Nen user would be able to kill the Ortho Siblings before they can meet the activation requirements of their ability. They needed a diversion (the shark-like ant) and an extra stealthy soldier (Remora) to use the ability. So it really was a 4 vs. 1.