Sai Saici's next opponent is the Mermaid Gundam. However he is distracted as he falls in love with the pilot's sister, Cecil. They go on dates, which prevents Sai from training. Almost arriving late for the match, Domon helps Sai make it to the match on time. Sai Saici manages to defeat the Mermaid Gundam by ripping off his own arm and using it as a decoy. Cecil and her brother have to leave, and Cecil kisses Sai, wishing him luck in the finals.