Board Thread:Naruto News/@comment-26408596-20150503091622/@comment-25283946-20150526160617

We see this symbol on Sakura's clothes and her mother's Clothes. But we see it even on the forehead of Hashirama when he uses the senjutsu and on the Naruto's clothes when he uses Six Paths Sage Mode. Perhaps this symbol could mean "Physical Strength" and therefore it has nothing to do with the Haruno clan.