Saitō points out that deep down Usui knows he will not be able to kill Shishio because Shishio came closer to death than Usui and developed an even greater power than the Shingan and just boasts about killing him to hide that fact from everyone else.
Usui, a native of the Ryukyu Islands, fights using a short spear with a weighted end - the rochin - to attack, and a tortoise shell - the tinbei - as a shield to deflect attacks and block the enemy's vision.
Sojiro then leaves the mansion telling Kenshin to get a new sword for their next battle.