Ep. 25: Kenshin and Kaoru are separated when the Kairyu pirates attack a boat cruise.

25

Kaoru boards a boat cruise to earn money, unaware that Kenshin, Yahiko, and Sanosuke have also joined the same vessel. Kenshin eventually discovers Kaoru is on board, but the Kairyu, a group of fearsome pirates who fight like demons, suddenly attack the ship. During the chaos, Kenshin becomes poisoned but manages to defeat Shura, the leader of the Kairyu. As the pirates retreat, they capture Kaoru. Kenshin voluntarily exchanges himself for her safety and is taken away by the Kairyu, leaving Kaoru, Yahiko, and Sanosuke behind on the ship.