A young boy named Hideaki appears in Rikyu, claiming his machine malfunctioned. Kouhei appears to see what the fuss is about, and is defeated by Hideaki single handed. Reiji and the others try to get him to join them, but Ichiro doesn't trust him, and neither does Chibi. He falls in love with Meguru, and when ichiro tells her he shouldn't be trusted, he runs away. They find him holding up a dam to protect a city and they all work together to stop the water. It appears they now trust Hideaki and Meguru tells him their plan. Hideaki then leaves with Meguru and heads towards Kouhei and Mahiru.