It's a SHURIKEN !
Not to come of as a know-it-all but that is not a swastika. Its intended to to be the kanji for ban (as in bankai). Now i may be off on this but i think that kanji rotates a different direction than the symbol made famous by the nazis.
Manga reading list: Bleach, Naruto, Katekyo Hitman Reborn, One Piece, Code Breaker, Gamaran, Kuroko No Basket, Fairy Tail, The World God Only Knows, Kimi No Iru Machi, Good Ending, Medaka Box, Nisekoi, D.Gray-Man, Ao No Exorcist, Freezing, Magi - Labyrinth of Magic, Soul Eater, Rosario Vampire Season II, Iris Zero, Ubell Blatt, Bloody Cross, Sun-Ken Rock, and Infinite Stratos,