The episode starts off with Seijuro Hiko remembering the past about when he first met Kenshin and while they were continuing the training Kenshin finally proves himself worthy of learning the final technique, so Hiko begins to start by teaching him the Kuzu-ryusen, a technique where it will hit 9 targets of martial arts at one time. Then Hiko instructs Kenshin to try the attack. Kenshin uses the attack flawlessly but Hiko performed one of his own and the end result is that Kenshin lost this skirmish due to his lacking in weight and size. Then after learning this Hiko proclaims "you must defeat this technique with the ultimate attack". After much worry about his friends Kenshin finally looks within himself for what he was missing in life and learns the ultimate technique, the Amakakeru Ryu No Hirameki, which is the will to live, said to be "stronger than anything". Though he has to pay a very high price. (thetvdb.com)