Board Thread:Naruto Discussions/@comment-31558627-20170424133713/@comment-4961229-20170424214931

Odd that Kusanagi couldn't pierce through 4-tailed Naruto, but Sasuke's sword could pierce 7th Hokage's cloak. Later versions seemed much weaker than early versions, or as plot required.

Also, why isn't 3rd Raikage's steel skin, renowned as the saikyō no tate (strongest shield), on this list?