Chasen Zake (literally, tea whisk sake) Act: The triplets and their wives gathered to celebrate their father who turned 70 years old, and changed his name to Shiratayu.
茶筅酒（ちゃせんざけ）の場：白太夫に名を改めた三つ子の父の70歳の祝いに、三つ子とその妻達が集まる。