Uonuma Usui confronts Saito while the others continue on through Shishio's mansion. Usui's claim to "True Vision" is put to the test by Saito, who sees it for what it really is - simply super enhanced hearing adopted by Usui to make up for his lack of sight. Saito realizes that Usui is in fact weak since his desire for revenge against Shishio has driven him to become a mere pawn in Shishio's game. An enraged Usui wounds Saito using the timbe, a tortoise-shell shield and blocks his vision, however, Usui is no match for Saito's Zeroshiki, a move Saito had been saving for a fight against Kenshin. (thetvdb.com)