詳細(xì)介紹：Michael Hayashida joined the cast in the middle of…Michael Hayashida joined the cast in the middle of the first season, as foreign exchange student Koichi. He stayed until the end of the season, when he disappeared, never to be mentioned again. Patty Gilbert also disappeared without an explanation before the beginning of the second season. Bruce Patman was the only character whose sudden disappearance was actually explained.詳情