Kyokujitsu Isshin-ryuu

Kyokujitsu Isshin-ryuu (旭日一心流, lit. "Rising Sun One Mind Style" or "Rising Sun Synthesis Style") is a style of swordsmanship, mainly practiced by the members of the Kurogane Family. It is known as the "sword of national defense" in Japan.

Techniques

 * Kyokujitsu Isshin-ryuu · Hagane no Kiwami - Hono Ikazuchi (旭日一心流 - 火雷, lit. "Rising Sun One Mind Style · Highest of Steel - Fire Thunder"): A diagonal slash with one hand, that is immediately followed by a strong punch with the other.
 * Kyokujitsu Isshin-ryuu · Retsu no Kiwami - Amatsukaze (lit. "Rising Sun One Mind Style · Highest of Sequence - Amatsukaze"): A secret technique taught for generations. It's a series of 108 continues slashes, which overpower the opponent with strength and speed.
 * Kyokujitsu Isshin-ryuu · Jin no Kiwami - Amaterasu (旭日一心流・迅の極 - 天照, lit. "Rising Sun of the One Mind Style · Highest of Swiftness - Amaterasu"): Another secret technique. The attack is an extremely fast slash, where the user uses all of their muscles, to deliver the fast strike.

Users

 * Ouma Kurogane
 * Ryoma Kurogane (unconfirmed)